Add Unity Package Manager (UPM) Support

[HoomanJCode]

Add Unity Package Manager (UPM) Support

This update configures RTLTMPro as a native Unity package, making it directly installable via the Unity Package Manager using a Git URL.

Changes Made:

• Added package.json inside the /Assets/RTLTMPro folder with proper UPM configuration
• Updated repository structure for UPM compatibility

Installation:

Users can now install the package directly through Unity's Package Manager:

From this repository (after merge):

https://github.com/pnarimani/RTLTMPro.git?path=/Assets/RTLTMPro

From the forked repository (for testing):

https://github.com/HoomanJCode/RTLTMPro.git?path=/Assets/RTLTMPro#Convert-to-git-package

How to Install:

1. Open Unity Package Manager (Window → Package Manager)
2. Click the + button → "Add package from git URL..."
3. Paste the repository URL above
4. Click Install

Benefits:

• Simplified workflow - Direct installation without external package managers
• Version control integration - Easy updates and version management
• Native Unity experience - Works seamlessly with Unity's built-in package system
• Accessibility - No additional tools or registries required

Note on Version Management:

For future releases, remember to update the version field in package.json to maintain proper version tracking.

Compatibility:

This approach complements the existing OpenUPM distribution by providing an additional, more direct installation method while maintaining all current functionality.