Loam API documentation

Start with loam_math and loam_shape, for geometry and shapes.

• hero
• loam
• loam_app
• loam_console
• loam_egui
• loam_math
• loam_physics
• loam_render
• loam_runtime
• loam_shape
• loam_text
• loam_time
• polytope_playground
• rubiks4d
• tesseract
• xtask