Add issue templates

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve Amphion.
+title: "[BUG]: "
+labels: 'bug'
+assignees: ''
+
+---
+
+## Describe the bug
+(A clear and concise description of what the bug is.)
+
+## How To Reproduce
+Steps to reproduce the behavior:
+1. Config/File changes: ...
+2. Run command: ...
+3. 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 Information
+ - Operating System: [e.g. Ubuntu 20.04.5 LTS]
+ - Python Version: [e.g. Python 3.9.15]
+ - Driver & CUDA Version: [e.g. Driver 470.103.01 & CUDA 11.4]
+ - Error Messages and Logs: [If applicable, provide any error messages or relevant log outputs]
+
+## Additional context
+(Add any other context about the problem here.)

.github/ISSUE_TEMPLATE/docs_feedback.md

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+---
+name: Docs feedback
+about: Improve documentation about Amphion.
+title: "[Docs]: "
+labels: 'documentation'
+assignees: ''
+
+---
+
+## Documentation Reference
+(Path/Link to the documentation file)
+
+## Feedback on documentation
+(Your suggestions to the documentation. e.g., accuracy, complex explanations, structural organization, practical examples, technical reliability, and consistency)
+
+## Additional context
+(Add any other context or screenshots about the documentation here.)

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for Amphion.
+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.)
+
+## 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/ISSUE_TEMPLATE/help_wanted.md

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+---
+name: Help wanted
+about: Want help from Amphion team.
+title: "[Help]: "
+labels: 'help wanted'
+assignees: ''
+
+---
+
+## Problem Overview
+(Briefly and clearly describe the issue you're facing and seeking help with.)
+
+## Steps Taken
+(Detail your attempts to resolve the issue, including any relevant steps or processes.)
+1. Config/File changes: ...
+2. Run command: ...
+3. See errors: ...
+
+## Expected Outcome
+(A clear and concise description of what you expected to happen.)
+
+## Screenshots
+(If applicable, add screenshots to help explain your problem.)
+
+## Environment Information
+ - Operating System: [e.g. Ubuntu 20.04.5 LTS]
+ - Python Version: [e.g. Python 3.9.15]
+ - Driver & CUDA Version: [e.g. Driver 470.103.01 & CUDA 11.4]
+ - Error Messages and Logs: [If applicable, provide any error messages or relevant log outputs]
+
+## Additional context
+(Add any other context about the problem here.)