Implement better character shader

[kiaking]

Currently, we are using Unity Toon Shader at the moment. Which is super easy to implement, and looks good enough (for me) to work on implementing features using character shaded this way.

There was multiple opinion in the community that we could build better shader. If possible, we should definitely do it.

Ideas & References

Gravity Rush reference

The Last Guardian style.

trico-animal.mp4

Hand Painting Style

https://www.artstation.com/artwork/KedYZr