feat(release): add structured release notes template

- Create template with categorized sections for features, bug fixes, breaking changes
- Include placeholders for version info, contributors, and installation instructions
- Support dynamic content replacement via template variables
- Add sections for upgrade notes and known issues

Author: BhaskarKulshrestha

.github/release-notes-template.md

@@ -0,0 +1,58 @@
+# Release Notes Template
+
+This template is used to automatically generate release notes for create-polyglot.
+
+## Release Notes for v{version}
+
+### 🚀 Features Added
+{features}
+
+### 🐛 Bug Fixes
+{bugfixes}
+
+### ⚠️ Breaking Changes
+{breaking}
+
+### 📚 Documentation
+{documentation}
+
+### 🔧 Internal/DevOps
+{internal}
+
+### 📦 Dependencies
+{dependencies}
+
+### 🎉 Other Changes
+{other}
+
+---
+
+**Full Changelog**: {compare_url}
+
+## What's Changed Since Last Release
+
+{commits}
+
+## Contributors
+
+Thanks to all the contributors who made this release possible!
+
+{contributors}
+
+---
+
+### Installation
+
+```bash
+npm install -g create-polyglot@{version}
+# or
+npx create-polyglot@{version} init my-project
+```
+
+### Upgrade Notes
+
+{upgrade_notes}
+
+### Known Issues
+
+{known_issues}