docs: Getting started revamp (backport) #8

Job	Run time
Build and publish artifacts and plugins locally	2m 27s
Basic checks	1m 1s
Run sbt test	3m 58s
Check service docker image contents	43s
Run annotation processor tests	1m 41s
Maven samples (shopping-cart-quickstart, true)	48s
Maven samples (choreography-saga-quickstart, true)	1m 11s
Maven samples (doc-snippets, false)	28s
Maven samples (view-store, true)	1m 15s
Maven samples (spring-dependency-injection, true)	1m 8s
Maven samples (event-sourced-customer-registry, true)	48s
Maven samples (event-sourced-counter-brokers, docker compose up -d, true)	1m 46s
Maven samples (event-sourced-customer-registry-subscriber, true, ./start-upstream.sh)	1m 21s
Maven samples (key-value-counter, true)	39s
Maven samples (key-value-shopping-cart, true)	43s
Maven samples (key-value-customer-registry, true)	1m 13s
Maven samples (tracing, false)	35s
Maven samples (reliable-timers, true)	41s
Maven samples (transfer-workflow, true)	49s
Maven samples (transfer-workflow-compensation, true)	1m 1s
	24m 16s

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