Document the OpenSearch operator #37

Job	Run time
Decide if Helm charts are pushed to the helm repository based on action trigger	3s
Run Cargo Deny (advisories)	42s
Run Clippy	29s
Run Cargo Deny (bans licenses sources)	42s
Run Rustfmt	13s
Run Cargo Udeps	2m 2s
Run Cargo Tests	30s
Check if committed Helm charts are up to date	39s
Run RustDoc	1m 25s
Check if committed README is the one we would render from the available parts	24s
All tests passed	2s
Package Charts, Build Docker Image and publish them - ubuntu-latest	10m 54s
Package Charts, Build Docker Image and publish them - ubicloud-standard-8-arm	9m 13s
Build and publish manifest list	41s
Run the OpenShift Preflight check on the published images	21s
	28m 20s

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