Add support for Slider Joint 3D (or similar) for Godot Impl

https://github.com/appsinacup/godot-rapier-physics/issues/219

- softness, restitution and damping are not exposed.

For this we are using now PrismaticJointBuilder.

Description of Slider Joint 3D:

A physics joint that restricts the movement of a 3D physics body along an axis relative to another physics body.

Description[](https://docs.godotengine.org/en/stable/classes/class_sliderjoint3d.html#description)

A physics joint that restricts the movement of a 3D physics body along an axis relative to another physics body. For example, Body A could be a [StaticBody3D](https://docs.godotengine.org/en/stable/classes/class_staticbody3d.html#class-staticbody3d) representing a piston base, while Body B could be a [RigidBody3D](https://docs.godotengine.org/en/stable/classes/class_rigidbody3d.html#class-rigidbody3d) representing the piston head, moving up and down.