Add docs for provider auto-registration #5472

Job	Run time
build / Verify build	1m 17s
license-check / License boilerplate check	10s
lint / Run golangci-lint	1m 42s
compose-migrate / docker	1m 48s
image-build / Image build	1m 58s
lint / Uncommitted changes check - go mod tidy & make gen	3m 5s
test / Authz tests	2m 33s
test / Coverage	6m 57s
test / Unit testing	6m 19s
image-build / Build Helm chart	1m 59s
image-build / Check docker image build	1m 40s
security / Code Security Scan	16s
security / Helm Security Scan	9s
	29m 53s

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