Add Github action to ensure code coverage requirements are met

[dreamer-89]

As part of this issue, we need to add a git action to ensure code coverage requirements are met without which PR merge is blocked. The codecov integration is already done. The codecov configuration defines the config around code coverage. As part of this change, we need to add a job which ensures this configuration is honoured.

Related

#850
#1320
https://docs.codecov.com/docs/codecov-yaml

[rblcoder]

Referring to https://docs.codecov.com/docs/commit-status, any further settings to be added for https://github.com/opensearch-project/OpenSearch/blob/main/codecov.yml?

[rblcoder]

@dreamer-89 Referring to https://docs.codecov.com/docs/commit-status, any further settings to be added for https://github.com/opensearch-project/OpenSearch/blob/main/codecov.yml?
Using similar codecov.yml, I see an error here rblcoder/daily_sleep_tracker#9

[dreamer-89]

Thanks @rblcoder for the comment. Yes, there are no changes required. Closing this issue.