docs+examples(get started): add trace ingestion examples for nodejs, python, go #6618

Job	Run time
Build docker image	5m 32s
Agent unit tests	1m 12s
CLI unit tests	30s
API Server unit tests	2m 39s
WebUI unit tests	1m 54s
config-e2e	1s
Tracetesting API Server (InMemory)	3m 50s
Tracetesting API Server (NATS)	3m 54s
CLI e2e tests (8, 0)	1m 17s
CLI e2e tests (8, 1)	1m 26s
WebUI End-to-end tests (1)	2m 43s
CLI smoke tests (local)	42s
CLI e2e tests (8, 2)	1m 22s
WebUI End-to-end tests (2)	2m 35s
CLI smoke tests (docker)	43s
Test examples (collector)	40s
CLI e2e tests (8, 3)	1m 27s
WebUI End-to-end tests (3)	2m 35s
Test examples (tracetest-jaeger)	39s
CLI e2e tests (8, 4)	1m 26s
WebUI End-to-end tests (4)	2m 40s
Test examples (tracetest-opensearch)	7m 21s
WebUI End-to-end tests (5)	2m 48s
CLI e2e tests (8, 5)	2m 43s
Test examples (tracetest-tempo)	39s
WebUI End-to-end tests (6)	2m 36s
CLI e2e tests (8, 6)	1m 26s
Test examples (tracetest-provisioning-env)	39s
WebUI End-to-end tests (7)	2m 36s
CLI e2e tests (8, 7)	3m 40s
WebUI End-to-end tests (8)	3m 39s
	1h 7m 54s

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