Add GitHub issue templates for bug reports and feature requests

.github/ISSUE_TEMPLATE/bug_report.yml

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+name: Bug Report
+description: Report a bug or issue with the TestResults library
+title: "[Bug]: "
+labels: ["bug"]
+assignees: []
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to report a bug! Please fill out the sections below to help us understand and fix the issue.
+
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: A clear and concise description of what the bug is.
+      placeholder: Describe the bug...
+    validations:
+      required: true
+
+  - type: textarea
+    id: steps-to-reproduce
+    attributes:
+      label: Steps to Reproduce
+      description: Detailed steps to reproduce the behavior
+      placeholder: |
+        1. Create a TestResults instance with...
+        2. Call method '...'
+        3. Observe error...
+      value: |
+        1. 
+        2. 
+        3. 
+    validations:
+      required: true
+
+  - type: textarea
+    id: expected-behavior
+    attributes:
+      label: Expected Behavior
+      description: A clear and concise description of what you expected to happen
+      placeholder: Describe what should happen...
+    validations:
+      required: true
+
+  - type: textarea
+    id: actual-behavior
+    attributes:
+      label: Actual Behavior
+      description: A clear and concise description of what actually happened
+      placeholder: Describe what actually happens...
+    validations:
+      required: true
+
+  - type: textarea
+    id: code-sample
+    attributes:
+      label: Code Sample
+      description: If applicable, provide a minimal code sample that reproduces the issue
+      placeholder: |
+        ```csharp
+        // Your code here
+        ```
+      render: csharp
+
+  - type: input
+    id: version
+    attributes:
+      label: Library Version
+      description: What version of the TestResults library are you using?
+      placeholder: e.g., 1.0.0
+    validations:
+      required: true
+
+  - type: dropdown
+    id: dotnet-version
+    attributes:
+      label: .NET Version
+      description: What version of .NET are you using?
+      options:
+        - ".NET 8"
+        - ".NET 9"
+        - ".NET 10"
+        - Other (please specify in additional context)
+    validations:
+      required: true
+
+  - type: input
+    id: os
+    attributes:
+      label: Operating System
+      description: What operating system are you using?
+      placeholder: e.g., Windows 11, Ubuntu 22.04, macOS 14.0
+
+  - type: textarea
+    id: additional-context
+    attributes:
+      label: Additional Context
+      description: Add any other context about the problem here, such as error messages, stack traces, or screenshots
+      placeholder: Any additional information...
+
+  - type: checkboxes
+    id: checklist
+    attributes:
+      label: Checklist
+      description: Please confirm the following
+      options:
+        - label: I have searched existing issues to ensure this is not a duplicate
+          required: true
+        - label: I have provided a clear description of the problem
+          required: true
+        - label: I have included steps to reproduce the issue
+          required: true

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false
+contact_links:
+  - name: Ask a Question
+    url: https://github.com/demaconsulting/TestResults/discussions
+    about: Ask questions and discuss with the community
+  - name: Security Issue
+    url: https://github.com/demaconsulting/TestResults/security/advisories/new
+    about: Report a security vulnerability privately

.github/ISSUE_TEMPLATE/feature_request.yml

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+name: Feature Request
+description: Suggest a new feature or enhancement for the TestResults library
+title: "[Feature]: "
+labels: ["enhancement"]
+assignees: []
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for suggesting a feature! Please fill out the sections below to help us understand your request.
+
+  - type: textarea
+    id: problem
+    attributes:
+      label: Problem Statement
+      description: Is your feature request related to a problem? Please describe.
+      placeholder: I'm frustrated when... / I need to be able to...
+    validations:
+      required: true
+
+  - type: textarea
+    id: solution
+    attributes:
+      label: Proposed Solution
+      description: Describe the solution you'd like to see
+      placeholder: A clear and concise description of what you want to happen
+    validations:
+      required: true
+
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Alternatives Considered
+      description: Describe any alternative solutions or features you've considered
+      placeholder: A clear and concise description of any alternative solutions or features
+
+  - type: textarea
+    id: examples
+    attributes:
+      label: Usage Examples
+      description: If applicable, provide examples of how this feature would be used
+      placeholder: |
+        ```csharp
+        // Example usage
+        var result = new TestResult
+        {
+            // Your example here
+        };
+        ```
+      render: csharp
+
+  - type: textarea
+    id: benefits
+    attributes:
+      label: Benefits
+      description: Explain why this enhancement would be useful to TestResults users
+      placeholder: This would be useful because...
+    validations:
+      required: true
+
+  - type: dropdown
+    id: priority
+    attributes:
+      label: Priority
+      description: How important is this feature to you?
+      options:
+        - Low - Nice to have
+        - Medium - Would improve my workflow
+        - High - Blocking my use case
+    validations:
+      required: true
+
+  - type: dropdown
+    id: willingness
+    attributes:
+      label: Willingness to Contribute
+      description: Would you be willing to contribute this feature?
+      options:
+        - "Yes, I can submit a pull request"
+        - "Yes, with guidance from maintainers"
+        - "No, but I can help test it"
+        - "No, I'm just suggesting"
+    validations:
+      required: true
+
+  - type: textarea
+    id: additional-context
+    attributes:
+      label: Additional Context
+      description: Add any other context, screenshots, or links about the feature request here
+      placeholder: Any additional information...
+
+  - type: checkboxes
+    id: checklist
+    attributes:
+      label: Checklist
+      description: Please confirm the following
+      options:
+        - label: I have searched existing issues to ensure this is not a duplicate
+          required: true
+        - label: I have provided a clear description of the feature
+          required: true
+        - label: I have explained why this feature would be useful
+          required: true