chore: add params to make crunchy optional, and document the steps needed. #4570

Job	Run time
Builds (backend)	24s
Builds (frontend)	22s
Builds (migrations)	10s
Deploys Database / Deploy Or Upgrade Crunchy DB	1m 14s
Deploys / Helm	1m 6s
Tests / Integration	7s
Tests / Load (backend)	1m 58s
Tests / E2E (chromium)	59s
Tests / Load (frontend)	3m 35s
Tests / E2E (Google Chrome)	1m 32s
Tests / E2E (firefox)	1m 12s
Tests / E2E (safari)	1m 33s
Tests / E2E (Microsoft Edge)	1m 34s
PR Results	1s
	15m 47s

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