Document the OpenSearch operator #38

Job	Run time
Decide if Helm charts are pushed to the helm repository based on action trigger	2s
Run Cargo Udeps	1m 46s
Run Cargo Deny (bans licenses sources)	52s
Run RustDoc	1m 43s
Run Cargo Deny (advisories)	48s
Run Cargo Tests	29s
Run Clippy	30s
Check if committed Helm charts are up to date	44s
Check if committed README is the one we would render from the available parts	31s
Run Rustfmt	15s
All tests passed	3s
Package Charts, Build Docker Image and publish them - ubuntu-latest	13m 45s
Package Charts, Build Docker Image and publish them - ubicloud-standard-8-arm	9m 53s
Build and publish manifest list	50s
Run the OpenShift Preflight check on the published images	16s
	32m 27s

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