[Backport 2.x] Add workflow to check compatibility

[opensearch-trigger-bot]

Backport 85f918e from #8486.

[codecov]

Codecov Report

Merging #9074 (2a36a15) into 2.x (335b977) will decrease coverage by 0.02%.
The diff coverage is 0.00%.

@@             Coverage Diff              @@
##                2.x    #9074      +/-   ##
============================================
- Coverage     70.81%   70.80%   -0.02%     
+ Complexity    57441    57385      -56     
============================================
  Files          4749     4749              
  Lines        271395   271399       +4     
  Branches      40055    40055              
============================================
- Hits         192201   192151      -50     
+ Misses        62767    62734      -33     
- Partials      16427    16514      +87     

Files Changed	Coverage Δ
...rg/opensearch/gradle/CheckCompatibilityTask.groovy	0.00% <0.00%> (ø)

... and 457 files with indirect coverage changes

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/21713/
• CommitID: 2a36a15

[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-9074-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 21723f097f643a89b81586df3e38e5920d294322
# Push it to GitHub
git push --set-upstream origin backport/backport-9074-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-9074-to-2.x.