fead: add OpenTelemetry observability support for modular inputs #1127

Job	Run time
pre-commit	24s
meta	12s
compliance-copyrights	28s
fossa-scan	49s
test-unit 3.10	1m 59s
test-unit 3.9	2m 7s
test-unit 3.11	1m 54s
test-unit 3.12	1m 55s
test-unit 3.13	1m 55s
semgrep / sast-scan	45s
test-splunk (9.3.2, d8bb32809498, false, false)	3m 15s
test-splunk (9.4.0, 6b4ebe426ca6, true, false)	2m 57s
publish	1m 6s
	19m 46s

Provide feedback