Loading custom meshes

[Gerbil789]

• [x] set up FBX SDK
• [x] Create Mesh & MeshFactory class
• [x] Load mesh data
  • [x] Vertices
  • [x] Indices
  • [x] UVs
  • [x] Normals
  • [ ] Materials

---

• [x] Create MeshRenderer component
• [x] Update serializer