docs: Getting started revamp (backport) #5

Job	Run time
Build and publish artifacts and plugins locally	2m 18s
Basic checks	48s
Run sbt test	3m 4s
Run annotation processor tests	1m 56s
Check service docker image contents	38s
Maven samples (shopping-cart-quickstart, true)	49s
Maven samples (choreography-saga-quickstart, true)	1m 10s
Maven samples (doc-snippets, false)	38s
Maven samples (view-store, true)	1m 31s
Maven samples (spring-dependency-injection, true)	48s
Maven samples (event-sourced-customer-registry, true)	50s
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 6s
Maven samples (key-value-counter, true)	50s
Maven samples (key-value-shopping-cart, true)	43s
Maven samples (key-value-customer-registry, true)	58s
Maven samples (tracing, false)	27s
Maven samples (reliable-timers, true)	40s
Maven samples (transfer-workflow, true)	42s
Maven samples (transfer-workflow-compensation, true)	56s
	22m 38s

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