[Enhancement] Create a groovy src library for distribution manifest

[zelinh]

Is your feature request related to a problem? Please describe

Currently we only have BuildManifest and InputManifest Jenkins method to process and fetch information from either build manifest or the manifest for ci pipeline. Although we can use BuildManifest to process the data for the distribution bundle manifest but it still lacks of some info like location. We should have a Jenkins library specifically for distribution manifest for those who want to use.
Example distributon manifest from 1.3.1 release: https://ci.opensearch.org/ci/dbc/distribution-build-opensearch/1.3.1/1584/linux/x64/dist/opensearch/manifest.yml

Acceptance criteria

• We have a Jenkins library DistributionManifest.groovy used to process info from distribution manifest.

Describe alternatives you've considered

Keep using the library based on BuildManifest.groovy but makes it more general for both types of manifest.

Additional context

No response

[abhinavGupta16]

[triage] It's a good idea to separate the manifests if it has a use case. We'll need to update the tag creation job once this is complete to use the DistributionManifest.groovy

[zelinh]

Closing this issue as we now have this library available.