full sp / mp compatibility

Release includes;

• remix-bridge nightly: https://github.com/NVIDIAGameWorks/bridge-remix/actions/runs/8026636009
• dxvk-remix nightly: https://github.com/NVIDIAGameWorks/dxvk-remix/actions/runs/8026234706
• all required t4- rtx assets

changelog:

• full mp compatibility - everything is rendered using fixed-function

• culling is now tweakable by using dvar rtx_disable_world_culling :: less should be enough for most use cases and saves a bit of perfomance - somewhat breaks current modDB demo mod because some lights / effects are attached to geo

• added dvar rtx_disable_entity_culling :: disable culling of game entities (enabled by default)

• added dvar rtx_sky_follow_player :: sky follows the player to prevent it from being culled (enabled by default)

• added cmd unlockall :: unlocks all sp missions

• disabled loading of specular and normal textures to declutter the remix ui

  • add commandline arg load_normal_spec to re-renable ^

• debug builds spawn an external console with redirected output and various debug prints

• game version check on startup