🚗 Realistic Car Dealer - Take your car with style

BUG FIXES

1. Fixed the permission check of the data transfer console commands
2. Fixed the ownership check when bringing back a rented showcase vehicle
3. Fixed server-side validation of the showcase entity
4. Fixed a possible double sale of a vehicle when using MySQL

AFFECTED FILES

1. lua/realistic_cardealer/server/sv_compatibilities.lua
2. lua/realistic_cardealer/server/sv_dealer.lua
3. lua/realistic_cardealer/server/sv_insurance.lua
4. lua/realistic_cardealer/server/sv_job.lua
5. lua/realistic_cardealer/server/sv_nets.lua