feat: Add GitHub issue templates for bug reports, features, and enhancements

.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: ''
+
+---
+
+## Description
+A clear and concise description of what the bug is.
+
+## Steps to Reproduce
+1. Step one
+2. Step two
+3. Step three
+
+## Expected Behavior
+What you expected to happen.
+
+## Actual Behavior
+What actually happened.
+
+## Environment
+- OS: [e.g. Linux, macOS, Windows]
+- Python version: [e.g. 3.10, 3.11]
+- Alix CLI version: [e.g. 1.0.0]
+- Shell: [e.g. bash, zsh, fish]
+
+## Additional Context
+Add any other context about the problem here.
+
+## Screenshots
+If applicable, add screenshots to help explain your problem.
+
+## Logs
+If applicable, add relevant log output here.

.github/ISSUE_TEMPLATE/enhancement.md

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+---
+name: Enhancement
+about: Suggest an improvement to an existing feature
+title: '[ENHANCEMENT] '
+labels: enhancement
+assignees: ''
+
+---
+
+## Current Behavior
+Describe the current behavior that you want to enhance.
+
+## Proposed Enhancement
+A clear and concise description of the proposed improvement.
+
+## Motivation
+Why is this enhancement needed? What problem does it solve?
+
+## Benefits
+What benefits would this enhancement provide to users or developers?
+
+## Implementation Details
+If you have specific ideas about how this enhancement should be implemented, please describe them.
+
+## Impact Assessment
+- **Breaking Changes**: Will this enhancement introduce any breaking changes?
+- **Performance**: Will this enhancement improve or impact performance?
+- **Complexity**: How complex would this enhancement be to implement?
+
+## Alternative Approaches
+Have you considered alternative ways to achieve the same improvement?
+
+## Additional Context
+Add any other context, examples, or references that help explain the enhancement.

.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: ''
+
+---
+
+## Problem Statement
+Is your feature request related to a problem you're facing? Please describe it clearly.
+
+## Proposed Solution
+A clear and concise description of what you want to happen.
+
+## Use Cases
+Describe the specific scenarios where this feature would be useful.
+
+## Alternative Solutions
+Have you considered any alternative solutions or workarounds?
+
+## Additional Context
+Add any other context, screenshots, mockups, or examples that help explain your feature request.
+
+## Implementation Suggestions
+If you have any ideas about how this feature could be implemented, please share them here.
+
+## Related Issues
+Are there any existing issues or discussions related to this feature request?