docs(contributing): add manim.typing guide

[JasonGrace2282]

Motivation

It's important to document the intention behind each TypeAlias present in the manim.typing module, as well as explain when to use each. For example, InternalPoint3D vs Vector3D have very different connotations, but the same signature.

From the guide:

In order to provide the best user experience, it's important that typehints are chosen correctly. With the large variety of types provided by Manim, choosing which one to use can be difficult. This guide aims to aid you in the process of choosing the right type for the scenario.

Link to Changed Documentation

https://manimce--3669.org.readthedocs.build/en/3669/contributing/docs/types.html

Progress

• Coordinates
• Colors
• Béziers
• Functions
• Images

CC @Viicos

[JasonGrace2282]

If anyone wants to write a quick description on the different representations of Béziers in Manim, feel free to push a commit adding it.