[IR] SNCF french Pack for immersive railroading

Locomotives :
- Added SNCF Alstom CC-72000 diesel (made by Leolienne)
- Added SNCF Y-2100 diesel shunter (made by Leolienne)
- Added SNCF 140C steam locomotive (made by Innards, 2 tenders)
- Added SNCF Alstom CC-6500M electric locomotive (made by Leolienne)
- Fixed textures on Est 130B

Passenger coaches :
- Added the full set Nord rapide "Torpille" (10 coaches)

Freight rolling stock :
- Nord E32
- OCEM 29
- PLM SSY101

Tracks :
- Added 9 custom french tracks