feat(PR template for examples): Create a generic PR template that can used for all contributions

.github/pull_request_template.md

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+# Pyth Examples Contribution
+
+## Type of Contribution
+<!-- Please check the type of contribution this PR represents -->
+
+- [ ] **New Example Project** (Adding a new example to demonstrate Pyth integration)
+- [ ] **Bug Fix** (Fixing an issue in existing examples)
+- [ ] **Documentation Update** (Improving README, comments, or guides)
+- [ ] **Enhancement** (Improving existing functionality or adding features)
+- [ ] **Hackathon Submission** (Submitting a project from a hackathon)
+
+## Project Information
+
+**Project/Example Name:** <!-- Enter the name of your project or the example you're working on -->
+
+**Pyth Product Used:** 
+- [ ] Pyth Price Feeds
+- [ ] Pyth Entropy
+- [ ] Multiple Products
+- [ ] Other: ___________
+
+**Blockchain/Platform:**
+- [ ] Ethereum/EVM
+- [ ] Solana  
+- [ ] Aptos
+- [ ] Sui
+- [ ] Fuel
+- [ ] Starknet
+- [ ] TON
+- [ ] Other: ___________
+
+## Description
+
+### What does this contribution do?
+<!-- Provide a clear description of what you're adding or changing -->
+
+### How does it integrate with Pyth?
+<!-- Explain how your code uses Pyth products/services -->
+
+### What problem does it solve or demonstrate?
+<!-- Describe the use case or issue this addresses -->
+
+### Directory Structure (for new examples)
+<!-- If adding a new example, show the directory structure -->
+```
+[product]/[example-name]/
+├── contract/          # Smart contracts (if applicable)
+├── app/              # Frontend application (if applicable)  
+├── README.md         # Project documentation
+└── ...
+```
+
+## Testing & Verification
+
+### How to Test This Contribution
+<!-- Provide clear instructions for reviewers to test your changes -->
+
+#### Prerequisites
+<!-- List any prerequisites needed -->
+- Node.js version: ___
+- Other dependencies: ___
+
+#### Setup & Run Instructions
+```bash
+# Add your setup and run commands here
+cd [path-to-your-example]
+npm install
+# ... other commands
+```
+
+### Deployment Information (if applicable)
+**Network:** <!-- e.g., Ethereum Sepolia, Solana Devnet, etc. -->
+
+**Contract Address(es):** <!-- Deployed contract addresses -->
+
+**Demo URL:** <!-- Link to live demo if available -->
+
+## Checklist
+
+### Code Quality
+- [ ] Code follows existing patterns in the repository
+- [ ] Proper error handling implemented
+- [ ] No hardcoded values (use environment variables where appropriate)
+
+### Testing
+- [ ] Tested locally and works as expected
+- [ ] All existing functionality still works (no breaking changes)
+
+## Additional Context
+
+### Related Issues
+<!-- Link any related GitHub issues -->
+Fixes #<!-- issue number -->
+
+### Screenshots/Demo (if applicable)
+<!-- Add screenshots or links to demos that help explain your contribution -->
+
+### Notes for Reviewers
+<!-- Add any additional context that would help reviewers -->
+
+---
+
+**Thank you for contributing to Pyth Examples!**
+
+<!-- 
+Helpful Resources:
+- Pyth Documentation: https://docs.pyth.network/
+- Price Feeds: https://docs.pyth.network/price-feeds
+- Entropy: https://docs.pyth.network/entropy  
+- Lazer: https://docs.pyth.network/lazer
+- Existing Examples: Browse the repository for reference implementations
+-->