chore: add GitHub issue and PR templates

.github/workflows/ISSUE_TEMPLATE/bug_report.md

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+---
+name: 🐛 Bug Report
+about: Report a bug to help us improve
+title: '[BUG] '
+labels: bug, needs-triage
+assignees: ''
+---
+
+## Bug Description
+
+<!-- A clear and concise description of what the bug is -->
+
+## Steps to Reproduce
+
+<!-- Provide detailed steps to reproduce the behavior -->
+
+1. Go to '...'
+2. Click on '...'
+3. Scroll down to '...'
+4. See error
+
+## Expected Behavior
+
+<!-- What you expected to happen -->
+
+## Actual Behavior
+
+<!-- What actually happened -->
+
+## Screenshots / Logs
+
+<!-- If applicable, add screenshots or error logs -->
+
+```
+<!-- Paste error logs here -->
+```
+
+## Environment
+
+<!-- Complete the following information -->
+
+- **OS**: [e.g., macOS 14.0, iOS 17.0, watchOS 9.0]
+- **Version**: [e.g., 1.2.3]
+
+## Additional Context
+
+<!-- Add any other context about the problem here -->
+
+## Possible Solution
+
+<!-- Optional: suggest a fix or reason for the bug -->
+
+## Related Issues
+
+<!-- Link to related issues if any -->
+
+---
+
+**Priority**: <!-- Low / Medium / High / Critical -->
+**Impact**: <!-- How many users are affected? -->

.github/workflows/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false
+contact_links:
+  - name: 💬 Discussions
+    url: https://github.com/space-code/snacker/discussions
+    about: Ask questions and discuss ideas with the community
+  - name: 📚 Documentation
+    url: https://github.com/space-code/snacker
+    about: Read the documentation

.github/workflows/ISSUE_TEMPLATE/documentation.md

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+---
+name: 📝 Documentation
+about: Suggest improvements or report issues in documentation
+title: '[DOCS] '
+labels: documentation
+assignees: ''
+---
+
+## Documentation Issue
+
+<!-- Describe the documentation issue or improvement -->
+
+## Location
+
+<!-- Where is this documentation located? Provide a link or path -->
+
+**Page/File**: 
+**Section**: 
+
+## Type of Change
+
+- [ ] Typo or grammar fix
+- [ ] Inaccurate or outdated information
+- [ ] Missing documentation
+- [ ] Unclear or confusing explanation
+- [ ] Code example improvement
+- [ ] New documentation needed
+
+## Current Content
+
+<!-- If updating existing content, quote or describe the current text -->
+
+```
+<!-- Current documentation -->
+```
+
+## Proposed Changes
+
+<!-- Describe what should be changed or added -->
+
+```
+<!-- Proposed documentation -->
+```
+
+## Why This Matters
+
+<!-- Explain why this documentation change is important -->
+
+## Additional Context
+
+<!-- Add any other context, screenshots, or examples -->
+
+## Related Issues / PRs
+
+<!-- Link to related issues or PRs -->

.github/workflows/ISSUE_TEMPLATE/feature_request.md

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+---
+name: ✨ Feature Request
+about: Suggest a new feature or enhancement
+title: '[FEATURE] '
+labels: enhancement, needs-triage
+assignees: ''
+---
+
+## Feature Summary
+
+<!-- Provide a brief summary of the feature -->
+
+## Motivation
+
+<!-- Why is this feature needed? What problem does it solve? -->
+
+**Is your feature request related to a problem?**
+<!-- e.g., I'm always frustrated when... -->
+
+## Proposed Solution
+
+<!-- Describe the solution you'd like -->
+
+## Alternative Solutions
+
+<!-- Describe any alternative solutions or features you've considered -->
+
+## Use Cases
+
+<!-- Describe specific use cases for this feature -->
+
+1. 
+2. 
+3. 
+
+## Benefits
+
+<!-- What are the benefits of implementing this feature? -->
+
+- 
+- 
+- 
+
+## Implementation Details
+
+<!-- Optional: Technical details, API design, or architectural considerations -->
+
+```
+<!-- Code examples or pseudocode if applicable -->
+```
+
+## Mockups / Examples
+
+<!-- If applicable, add mockups, wireframes, or examples from other products -->
+
+## Potential Drawbacks
+
+<!-- Are there any potential downsides or trade-offs? -->
+
+## Additional Context
+
+<!-- Add any other context, screenshots, or references -->
+
+## Related Issues / PRs
+
+<!-- Link to related issues or PRs -->
+
+---
+
+**Priority**: <!-- Low / Medium / High -->
+**Effort Estimate**: <!-- Small / Medium / Large / XL -->
+**Would you like to implement this feature?**: <!-- Yes / No / Maybe -->

.github/workflows/ISSUE_TEMPLATE/question.md

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+---
+name: ❓ Question
+about: Ask a question about the project
+title: '[QUESTION] '
+labels: question
+assignees: ''
+---
+
+## Question
+
+<!-- Ask your question clearly and concisely -->
+
+## Context
+
+<!-- Provide context to help us understand your question better -->
+
+## What I've Already Tried
+
+<!-- Describe what you've already tried to find the answer -->
+
+- [ ] Searched existing issues
+- [ ] Checked documentation
+- [ ] Searched online resources
+- [ ] Attempted to solve it myself
+
+## Related Documentation
+
+<!-- Link to any relevant documentation you've reviewed -->
+
+## Environment (if applicable)
+
+- **OS**: 
+- **Version**: 
+
+## Additional Information
+
+<!-- Any other information that might be helpful -->