docs(cfw): Add better prerequisites explanation #5634

Job	Run time
API Server unit tests	2m 37s
Agent unit tests	41s
WebUI unit tests	1m 56s
Build docker image	5m 58s
CLI unit tests	29s
config-e2e	1s
Test examples (collector)	51s
CLI smoke tests (local)	52s
Test examples (tracetest-jaeger)	48s
CLI smoke tests (docker)	41s
CLI e2e tests (8, 0)	1m 17s
Test examples (tracetest-opensearch)	7m 46s
CLI e2e tests (8, 1)	1m 17s
Tracetesting API Server (InMemory)	4m 9s
Test examples (tracetest-tempo)	46s
CLI e2e tests (8, 2)	2m 32s
Tracetesting API Server (NATS)	4m 8s
CLI e2e tests (8, 3)	1m 23s
Test examples (tracetest-provisioning-env)	41s
CLI e2e tests (8, 4)	1m 24s
Test examples (tracetest-signoz)	2m 14s
CLI e2e tests (8, 5)	1m 32s
CLI e2e tests (8, 6)	4m 17s
WebUI End-to-end tests (1)	4m 1s
CLI e2e tests (8, 7)	4m 35s
WebUI End-to-end tests (2)	3m 1s
WebUI End-to-end tests (3)	2m 54s
WebUI End-to-end tests (4)	3m 1s
WebUI End-to-end tests (5)	2m 56s
WebUI End-to-end tests (6)	3m 0s
WebUI End-to-end tests (7)	3m 3s
WebUI End-to-end tests (8)	3m 0s
	1h 17m 51s

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