[FVTM] Fex's Vehicle and Transportation Mod

- more wire component rendering related adjustments/fixes
- UniWireRenderer now also handles interact-box rendering
- improved wire interact-box rendering / conditions / color
- merged RenderCache with RenderCacheI and related changes
- (1.12) removed RenderCache capability and related changes
- (1.12) removed RailTestEntity and related classes
- (1.20) removed RenderCache capability and related changes
- (1.20) added RenderCache support to 1.20 BE Rendering
- (26.1) added RenderCache support to 26.1 BE Rendering
- `fvtm:attribute_rotator`, `fvtm:attribute_translator` and `fvtm:attribute_visible` have now a version neutral implementation
- reworked ModelRenderData, usage and related changes
- added `rotation` field to ModelGroup
- reworked existing programs to use ModelGroup `rotation`
- (26.1) earlier mentioned changes fix attribute rotator/translator program state not being visible
- changed ModelGroup `scale` field to V3D and related changes
- merged wheel programs into an universal implementation
- merged steering wheel programs
- further adjustments in UniWireRenderer to make wire components display correctly on 26.1