Manifold Engine

Nobody has claimed this yet.

Manifold is Third Room's game engine. It's currently loosely embedded in this Third Room repository under the `/editor` folder. The plan is to eventually publish it as a standalone game engine after it has had time to mature within Third Room.

The following is a high level list of features and todo items for the engine:

- [ ] Entity Component System (ECS)
- [x] Complete Transform Component API
- [ ] Implement editor / UGC ECS API
- [x] Resource Loading
- [x] Refactor resource loading API
- [ ] Rendering
- [ ] Add postprocessing effects
- [x] Add instanced mesh support
- [ ] Add LOD support
- [ ] Add light probes
- [x] Add reflection probes
- [x] Input
- [x] #66
- [x] Finalize network identifiers
- [x] Add Spatialized VoIP
- [x] Finish network templates
- [x] Networked avatars w/ animation
- [x] #65
- [x] Physics
- [x] Fix character controller
- [x] Specify / implement glTF physics extensions
- [x] Animation
- [x] ECS Animation Mixer API
- [ ] Avatars
- [ ] VRM Support
- [ ] Hubs Avatar Support

The engine is loosely embedded under the /editor folder; start by reviewing that area and the unchecked roadmap items. The issue does not identify a specific entry point, test, or selected task, so completion criteria must be established for one scoped engine feature before implementation can begin.

Written by the indexing model from the issue text.