[BUG] Missing license header

[gaiksaya]

What is the bug?

Many files in this repo are missing license headers

How can one reproduce the bug?

Go through https://github.com/opensearch-project/opensearch-metrics/tree/main/src

What is the expected behavior?

All files should have license headers. Also as an enhancement, add license checker similar to https://github.com/opensearch-project/opensearch-build/blob/main/.github/workflows/license-header-checker.yml

What is your host/environment?

Operating system, version.

Do you have any screenshots?

If applicable, add screenshots to help explain your problem.

Do you have any additional context?

Add any other context about the problem.

[prudhvigodithi]

[Triage]
Thanks for the PR #54 @gaiksaya
@getsaurabh02 @bshien

[prudhvigodithi]

@gaiksaya can we close this issue?

[gaiksaya]

@gaiksaya can we close this issue?

I dont think so. I just added for infrastructure code but java code still needs license headers. Regarding license checker I think that can be tracked in separate issue.