[Refactor] Version and LegacyESVersion from server module to core lib

[nknize]

Refactors the Version and LegacyESVersion classes from the server module to the core library. All gradle build scripts and dependencies are updated. This commit serves as a foundation for refactoring all OpenSearch base classes from the server module into appropriate libraries to decouple core search logic from the cluster model so it can be reused in serverless and cloud native environments.

relates #5910

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/14648/
• CommitID: 97d0a26
  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/14649/
• CommitID: 40c7853

[codecov-commenter]

Codecov Report

Merging #7328 (40c7853) into main (d984f50) will decrease coverage by 0.10%.
The diff coverage is 85.36%.

📣 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    #7328      +/-   ##
============================================
- Coverage     70.71%   70.61%   -0.10%     
+ Complexity    59497    59421      -76     
============================================
  Files          4859     4859              
  Lines        285339   285340       +1     
  Branches      41133    41133              
============================================
- Hits         201772   201489     -283     
- Misses        66965    67242     +277     
- Partials      16602    16609       +7     

Impacted Files	Coverage Δ
.../opensearch/gradle/info/GlobalBuildInfoPlugin.java	38.46% <0.00%> (ø)
libs/core/src/main/java/org/opensearch/Build.java	66.66% <ø> (ø)
.../src/main/java/org/opensearch/LegacyESVersion.java	63.10% <0.00%> (ø)
...ibs/core/src/main/java/org/opensearch/Version.java	76.73% <0.00%> (ø)
...admin/indices/upgrade/post/ShardUpgradeResult.java	0.00% <0.00%> (ø)
...on/admin/indices/upgrade/post/UpgradeResponse.java	0.00% <0.00%> (ø)
...n/indices/upgrade/post/UpgradeSettingsRequest.java	0.00% <0.00%> (ø)
.../main/java/org/opensearch/env/NodeEnvironment.java	77.73% <ø> (-0.19%)	⬇️
...a/org/opensearch/extensions/ExtensionsManager.java	45.25% <ø> (ø)
...rg/opensearch/index/translog/RemoteFsTranslog.java	74.37% <ø> (ø)
... and 31 more

... and 458 files with indirect coverage changes

[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-7328-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 142ae4611042669c9511a81a014828ca22376afc
# Push it to GitHub
git push --set-upstream origin backport/backport-7328-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-7328-to-2.x.

[ashking94]

@nknize @dblock Is this supposed to be backported to 2.x?

[dblock]

I don't know, @nknize?

[Xtansia]

@nknize This refactoring looks to have broken the check here https://github.com/opensearch-project/OpenSearch/blob/main/libs/core/src/main/java/org/opensearch/Build.java#L112-L149 as it's based on the code source location of the Build class. The code expects it to still be in opensearch-3.0.0-SNAPSHOT.jar but it is now in opensearch-core-3.0.0-SNAPSHOT.jar causing it to return unknown for build hash and build date.

[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-7328-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 142ae4611042669c9511a81a014828ca22376afc
# Push it to GitHub
git push --set-upstream origin backport/backport-7328-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-7328-to-2.x.