Feature: Convar to disable map-load asset reloading

[koerismo]

Which component should be improved?

Other

Describe your feature suggestion in more detail

A cvar to disable the client's automatic reloading of all materials/textures/etc every map load would allow standalone mods to speed up load times as a quick optimization. Possible downsides include issues related to BSP-packed content and addons, however these would be negligible if the mod is being distributed as a standard sourcemod or through Steam, as they can just opt to pack content into vpks.

A cvar with this functionality is currently present in Revolution.