Add issue templates

Author: sergiught

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false
+contact_links:
+  - name: Auth0 Community
+    url: https://community.auth0.com/c/sdks/5
+    about: Discuss this SDK in the Auth0 Community forums
+  - name: SDK API Documentation
+    url: https://pkg.go.dev/github.com/auth0/go-jwt-middleware
+    about: Read the API documentation for this SDK

.github/ISSUE_TEMPLATE/feature_request.md

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+**Please do not report security vulnerabilities here**. 
+The [Responsible Disclosure Program](https://auth0.com/whitehat) details the procedure for disclosing security issues.
+
+**Thank you in advance for helping us to improve this library!** 
+Your attention to detail here is greatly appreciated and will help us respond as quickly as possible. 
+For general support or usage questions, use the [Auth0 Community](https://community.auth0.com/) or
+[Auth0 Support](https://support.auth0.com/). 
+Finally, to avoid duplicates, please search existing Issues before submitting one here.
+
+By submitting an Issue to this repository, you agree to the terms within the 
+[Auth0 Code of Conduct](https://github.com/auth0/open-source-template/blob/master/CODE-OF-CONDUCT.md).
+
+### Describe the problem you'd like to have solved
+
+<!---
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+-->
+
+### Describe the ideal solution
+
+<!---
+A clear and concise description of what you want to happen.
+--->
+
+## Alternatives and current workarounds
+
+<!---
+A clear and concise description of any alternatives you've considered or any work-arounds that are currently in place.
+-->
+
+### Additional context
+
+<!---
+Add any other context or screenshots about the feature request here.
+-->

.github/ISSUE_TEMPLATE/report_a_bug.md

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+**Please do not report security vulnerabilities here**.
+The [Responsible Disclosure Program](https://auth0.com/whitehat) details the procedure for disclosing security issues.
+
+**Thank you in advance for helping us to improve this library!**
+Your attention to detail here is greatly appreciated and will help us respond as quickly as possible.
+For general support or usage questions, use the [Auth0 Community](https://community.auth0.com/) or
+[Auth0 Support](https://support.auth0.com/).
+Finally, to avoid duplicates, please search existing Issues before submitting one here.
+
+By submitting an Issue to this repository, you agree to the terms within the
+[Auth0 Code of Conduct](https://github.com/auth0/open-source-template/blob/master/CODE-OF-CONDUCT.md).
+
+### Describe the problem
+
+<!---
+Provide a clear and concise description of the issue.
+-->
+
+### What was the expected behavior?
+
+<!---
+Tell us about the behavior you expected to see.
+-->
+
+### Reproduction
+
+<!---
+Detail the steps taken to reproduce this error, and whether this issue can be reproduced consistently or if it is 
+intermittent.
+**Note**: If clear, reproducible steps or the smallest sample app demonstrating misbehavior cannot be provided, we may
+not be able to follow up on this bug report.
+
+
+1. ...
+2. ...
+3. ...
+
+If so, provide steps:
+
+Where applicable, please include:
+
+- The smallest possible sample app that reproduces the undesirable behavior
+- Log files (redact/remove sensitive information)
+- Application settings (redact/remove sensitive information)
+- Screenshots
+-->
+
+### Environment
+
+<!---
+Please provide the following:
+
+- **Version of `go-jwt-middleware` used:**
+- **Other modules/plugins/libraries that might be involved:**
+-->