Remove non-MIT licensed materials and replace with Mannequiny.

[KennethOshiro]

This is still a work in progress, but it will close issue #5 and partially address issue #4 .

The main changes are as follows:

• Remove copyrighted materials from the project
• Replace the model with Mannequiny.
• Move the interpolated camera into its own distinct asset folder.

Also included are Mannequiny's AnimationPlayer and AnimationTree nodes, but they are currently not working correctly.

This has been tested with the latest stable release of Godot 4, but it should also work with the current 4.1 dev release.

[emirthab]

https://user-images.githubusercontent.com/52050284/234266838-675cb5ca-11aa-4aea-b185-ac2d943dfd7a.mov

Hello. First of all, I would like to thank the third-party controller for their contribution 🙏 But I guess the animations are not working properly.

[KennethOshiro]

Hi, I managed to get the animations fixed.

I decided to use a different character controller and camera script.

[emirthab]

After a few edits I uploaded the project back to the assets store. Thanks a lot for your contribution...