feat: added templates

Author: michiosw

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug Report
+about: Create a report to help us improve
+title: "[BUG] "
+labels: bug
+assignees: ""
+---
+
+## Describe the bug
+
+A clear and concise description of what the bug is.
+
+## To Reproduce
+
+Steps to reproduce the behavior:
+
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+Expected behavior
+
+A clear and concise description of what you expected to happen.
+
+Screenshots
+
+If applicable, add screenshots to help explain your problem.
+
+## Environment (please complete the following information):
+
+- OS: [e.g. macOS, Windows, Linux]
+  - Version [e.g. 1.2.3]
+- Client [if applicable]
+  - Version [e.g. 1.2.3]
+
+## Additional context
+
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature Request
+about: Suggest an idea for this project
+title: "[FEATURE] "
+labels: enhancement
+assignees: ""
+---
+
+## Is your feature request related to a problem? Please describe.
+
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+## Describe the solution you'd like
+
+A clear and concise description of what you want to happen.
+
+## Describe alternatives you've considered
+
+A clear and concise description of
+any alternative solutions or features you've considered.
+
+## Additional context
+
+Add any other context or screenshots about the feature request here.

.github/pull_request_template.md

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+## Description
+
+Please include a summary of the changes and which issue is fixed. Please also
+include relevant motivation and context.
+
+Fixes # (issue)
+
+## Type of change
+
+Please delete options that are not relevant.
+
+- [ ] Bug fix (non-breaking change which fixes an issue)
+- [ ] New feature (non-breaking change which adds functionality)
+- [ ] Breaking change (fix or feature that would cause existing functionality to
+      not work as expected)
+- [ ] Documentation update
+
+## How Has This Been Tested?
+
+Please describe the tests that you ran to verify your changes. Provide
+instructions so we can reproduce.
+
+## Checklist:
+
+- [ ] My code follows the style guidelines of this project
+- [ ] I have performed a self-review of my code
+- [ ] I have commented my code, particularly in hard-to-understand areas
+- [ ] I have made corresponding changes to the documentation
+- [ ] My changes generate no new warnings
+- [ ] I have added tests that prove my fix is effective or that my feature works
+- [ ] New and existing unit tests pass locally with my changes (if applicable)