Update Vector/Matrix API

[christophercrouzet]

The intent is to:

• Keep wp.types as a public namespace for grouping APIs that manipulate and introspect types (done ✔️).
• Keep wp.types.vector() and wp.types.matrix(), which create new types (done ✔️).
• Deprecate wp.vec() and wp.mat() from the Python scope (done ✔️).
• Consider exposing these to kernel scope (Investigate Exposing wp.types.vector() and wp.types.matrix() to Kernels #1196).
• Add wp.vector() and wp.matrix() to the Python scope to match the kernel built-ins (Add wp.vector() and wp.matrix() to Python Scope #1197).