Add Lizard Prototype with Procedural Animation

[RazvanRotaru]

https://github.com/UPB-Graphics/Beyond-Genesis-Client/issues/3

Description of the Change: A prototype model was made in a modular manner in blender, aiming to have it's parts easily exchanged. It is procedurally animated, using IK contraints.

The scripts added are:

• Follow.cs - a mechanism for the camera
• LimbController.cs - a controller that assures the movement of a limb will be done only under certain circumstances and o a specific elipse
• TailController.cs - a controller that acts as an interface for the tails rotation
• MovementController.cs - a controller that is a container for the parameters of the controllers above, used for "gluing" all the movements together and applies a translation and rotation for the body itself
• AttachLimbs.cs - attaches all the body parts to a body
• JiggleChain.cs - a implementation presented at the demo of the Animation Rigging package back in 2020 (or 2019), it fits the movement of a tail. Also, it can be further improved as it allows rotation only mainly in one direction
• LimbIK.cs - is a work in progress, is supposed to replace LimbController.cs and it's attached TwoBoneIKConstraint but it need an currently need a work-around for raycasting the foot on the ground as the Physics can only be used in the main thread.

A test scene for functionality will be found in the _DEV folder.

Release Notes: Contributing to Issue: Primitive Characters by adding a first animal prototype, namely a Lizard.

[RazvanRotaru]

The axes of the object are different from the usual, namely, transform.right and transform.forward are switched with each other, and all the scripts work for this particular scenario. However, the needed adjustments are minor.