Adds a staff button to check for whitelisted players. #28354

Job	Run time
Lint with OpenDream	20s
Compile Maps	42s
Find Maps to Test	9s
Windows Build	50s
Run Linters	2m 3s
Alternate Tests	0s
Check Alternate Tests	0s
Unit Tests (almayer) / run_unit_tests	3m 18s
Unit Tests (bigredv2) / run_unit_tests	3m 6s
Unit Tests (chinook) / run_unit_tests	3m 1s
Unit Tests (corsat) / run_unit_tests	3m 7s
Unit Tests (fiorina_sciannex) / run_unit_tests	3m 28s
Unit Tests (ice_colony_v2) / run_unit_tests	3m 8s
Unit Tests (desert_dam) / run_unit_tests	3m 13s
Unit Tests (lv522_chances_claim) / run_unit_tests	3m 31s
Unit Tests (kutjevo) / run_unit_tests	3m 10s
Unit Tests (lv624) / run_unit_tests	3m 10s
Unit Tests (new_varadero) / run_unit_tests	3m 8s
Unit Tests (prison_station_fop) / run_unit_tests	3m 8s
Unit Tests (runtime) / run_unit_tests	2m 53s
Unit Tests (shivas_snowball) / run_unit_tests	3m 9s
Unit Tests (sorokyne_strata) / run_unit_tests	3m 9s
Unit Tests (whiskey_outpost_v2) / run_unit_tests	3m 4s
	54m 47s

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