(v2.0) feat: add issue templates

Author: root-hbx

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: a brief bug report
+title: "[Bug]"
+labels: bug, help wanted
+assignees: ''
+
+---
+
+## Problem Description
+
+A clear and concise description of what the bug is.
+
+**(1) To Reproduce**
+
+Steps to reproduce the behavior, please list them in sequence.
+
+**(2) Expected Behavior**
+
+A clear and concise description of what you want to happen.
+
+**(3) Actual Behavior**
+
+Current situation / outputs.
+
+Please add any other context or screenshots that would help here.
+
+## Alternatives
+
+Suggestions of any alternative solutions or features you've considered.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: an idea for improvement
+title: "[Feature]"
+labels: enhancement, help wanted, question
+assignees: ''
+
+---
+
+## How to come
+
+**(1) 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 [...]
+
+**(2) Share your solution**
+
+A clear and concise description of what you want to happen.
+
+## Alternatives
+
+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.