Ports refactor/organization of mob spawners, new ashwalker egg sprite #3945

Job	Run time
Run Linters	1m 49s
Collect data for other tasks	11s
Compile Maps	1m 48s
Windows Build	1m 34s
Alternate Tests	0s
Integration Tests (boxstation) / run_integration_tests	6m 16s
Integration Tests (corgstation) / run_integration_tests	5m 20s
Integration Tests (deltastation) / run_integration_tests	5m 34s
Integration Tests (echostation) / run_integration_tests	7m 17s
Integration Tests (flandstation) / run_integration_tests	5m 28s
Integration Tests (kilostation) / run_integration_tests	5m 20s
Integration Tests (metastation) / run_integration_tests	5m 17s
Integration Tests (multiz_debug) / run_integration_tests	6m 5s
Integration Tests (radstation) / run_integration_tests	5m 29s
Integration Tests (runtimestation) / run_integration_tests	5m 16s
Check Alternate Tests	0s
Compare Screenshot Tests	16s
	1h 3m 0s

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