Aux Rewrite: RD501 Tracers Migrated and fixed

Below is a list of fixes and updates:

RD501 Tracers

• All variants migrated to Aux501 ammo file
• Model fixed to be able to come out of the center of any weapon
• Yellow Variants created
• Textures and material migrated to new Aux501 folder
• All old tracers replaced in old aux

Here is the list of things to test:

• All Small arms that are Aux501 have tracers that work properly and come out from the center of the weapon and not beneath
• All air vehicles have tracers working properly
• All turrets have tracers working properly
• All Ground vehicles have tracers working properly