feat: physics

[craftablescience]

• Integrate Jolt Physics
  • Add various collider types
    • (todo: list them all out here)
  • Add various body types (in one component? only one should be added per entity)
    • Static bodies
    • Rigid bodies
    • Kinematic bodies
• Better editor integration to control physics objects
  • "Simulate" button to simulate physics on selected objects
  • Physics disabled by default (when enabled, physics objects can't be manipulated in 3D space by the user)

Closes #21