docs(github): add issue_template for feature_request, bug_report and documentation

Author: Lee-W

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: 🛠 Bug report
+about: Create a report to help us improve
+title: "[Bug Report] Good bug title tells us about precise symptom, not about the root cause."
+labels: "bug"
+assignees: ""
+---
+
+## Description
+A clear and concise description of what the bug is.
+
+## commitizen version
+x.y.z
+
+## Steps to Reproduce
+Steps to reproduce the behavior:
+1. Run ...
+2. ...
+3. ...
+
+## Expected Behavior
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+## Actual Behavior
+What happens actually so you think this is a bug.
+
+## More Information

.github/ISSUE_TEMPLATE/documentation.md

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+---
+name: 📖 Documentation
+about: Suggest an improvement for the documentation of this project
+title: "[Documentation] Content to be added or fixed"
+labels: "documentation"
+assignees: ""
+---
+
+## Type
+* [ ] Conent inaccurate
+* [ ] Content missing
+* [ ] Typo
+
+## URL
+URL to the code we did not clearly describe or the document page where the content is inaccurate
+
+## Description
+A clear and concise description of what content should be added or fixed

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: 🚀 Feature request
+about: Suggest an idea for this project
+title: "[Feature Request] <One feature request per issue>"
+labels: ""
+assignees: ""
+---
+
+## Description
+A clear and concise description for us to know your idea.
+
+## Possible Solution
+A clear and concise description of what you want to happen.
+
+## Additional context
+Add any other context or screenshots about the feature request here.
+
+## Related Issue
+If applicable, add link to existing issue also help us know better.