Document the OpenSearch operator #42

Job	Run time
Decide if Helm charts are pushed to the helm repository based on action trigger	3s
Run Cargo Udeps	1m 49s
Run Cargo Deny (bans licenses sources)	42s
Run Cargo Deny (advisories)	50s
Run Rustfmt	14s
Run Clippy	31s
Run Cargo Tests	29s
Check if committed Helm charts are up to date	38s
Run RustDoc	1m 19s
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 - ubicloud-standard-8-arm	9m 40s
Package Charts, Build Docker Image and publish them - ubuntu-latest	11m 56s
Build and publish manifest list	45s
Run the OpenShift Preflight check on the published images	18s
	29m 40s

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