[Extensions] Adding cross version support for registering Transport Actions

[saratvemulapalli]

Description

Adding cross version support for registering transport actions API for extensions via protobuf.

Related Issues

Part of #7402

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Commits are signed per the DCO using --signoff
• Commit changes are listed out in CHANGELOG.md file (See: Changelog)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[saratvemulapalli]

@kotwanikunal updated the dev guide. Hopefully this helps, if there's anything missing let me know.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/14831/
• CommitID: 5c43d45
  Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green.
  Is the failure a flaky test unrelated to your change?

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/14830/
• CommitID: 11dd9a8
  Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green.
  Is the failure a flaky test unrelated to your change?

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/14832/
• CommitID: 8ae59e8
  Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green.
  Is the failure a flaky test unrelated to your change?

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/14833/
• CommitID: 7aa7fbf

[codecov-commenter]

Codecov Report

Merging #7403 (7aa7fbf) into main (3687d01) will decrease coverage by 0.09%.
The diff coverage is 80.00%.

📣 This organization is not using Codecov’s GitHub App Integration. We recommend you install it so Codecov can continue to function properly for your repositories. Learn more

@@             Coverage Diff              @@
##               main    #7403      +/-   ##
============================================
- Coverage     70.63%   70.55%   -0.09%     
+ Complexity    59554    59507      -47     
============================================
  Files          4875     4875              
  Lines        285744   285743       -1     
  Branches      41160    41161       +1     
============================================
- Hits         201825   201594     -231     
- Misses        67327    67540     +213     
- Partials      16592    16609      +17     

Impacted Files	Coverage Δ
...nsions/action/RegisterTransportActionsRequest.java	78.94% <80.00%> (-6.06%)	⬇️

... and 496 files with indirect coverage changes

[owaiskazi19]

Overall LGTM! With small comments

[opensearch-trigger-bot]

The backport to 2.x failed:

The process '/usr/bin/git' failed with exit code 128

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add ../.worktrees/backport-2.x 2.x
# Navigate to the new working tree
pushd ../.worktrees/backport-2.x
# Create a new branch
git switch --create backport/backport-7403-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 eacfb70f6492c1b47c6047444066d1ecdf7a0dcd
# Push it to GitHub
git push --set-upstream origin backport/backport-7403-to-2.x
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/backport-2.x

Then, create a pull request where the base branch is 2.x and the compare/head branch is backport/backport-7403-to-2.x.