replaces ambulan.dff and ambulan.txd by default

Attention VehFuncs users! Always be sure to have the latest VehFuncs installed:
https://gtaforums.com/topic/904475-vehfuncs/
VehFuncs version at the time of release: v2.1 beta 04/07/20

- 4 versions:
+ 2 IVF versions (original lights):
- San Andreas Fire Department version
- San Andreas Medical Services version
+ San Andreas version (SA lights and dirt, Fire department only)
+ VehFuncs version (city based liveries: 3 each city, dynamic numbers, front push bar as extra)
- All versions adapted to IVF
- San Andreas reflections
- San Andreas license plates
- Gas tank door
- ped_arm dummy
- High quality damage model
- Realistic size
- If replaced by default, no sinking/small wheels in SA-MP/MTA
- Custom .col file
- Fixed R* bugs (door openings etc)
- Custom handling
- Compatible with Improved Vehicle Features by DK22pac
- 100% SA-MP/MTA support