HedgeLib++ - Support same Hedgehog Engine formats as C# HedgeLib

Specifically, this means HedgeLib++ should be able to do all of the following:

[ ] Read Lights (.light)
[x] Read Models (.model, .terrain-model) [5dba8b4f8dece1b3d03d681246b13eceaef29c8b]
[X] Read Materials (.material) [f4905e249e69ae87b0746d8efc56864cb00d84fe]
[X] Read Texture Information (.texture) [f4905e249e69ae87b0746d8efc56864cb00d84fe]
[X] Read Texture sets (.texset) [f4905e249e69ae87b0746d8efc56864cb00d84fe]
[ ] Write Lights (.light)
[x] Write Models (.model, .terrain-model)
[ ] Write Materials (.material)
[ ] Write Texture Information (.texture)
[ ] Write Texture sets (.texset)

Radfordhound / HedgeLib