Update RGL resources to `v256`

[drunderscore]

Now includes these plugins by default:

• config_checker
• rglqol

Additionally, it will include these disabled plugins:

• p4sstime
• tf2Halftime
• roundtimer_override

I have not included improved_match_timer, pause, and tf2-comp-fixes, as thsoe are already included by us as first-party plugins.

I have also not included rglupdater and updater, as the images should be thought of as to be static.

[garrappachc]

Thanks!