Split repository into separate plugins

[msfroh]

Description

We would like to be able to install a plugin that supports reranking with Amazon Personalize without automatically getting Amazon Kendra Intelligent Ranking too. Users should be able to choose which external reranker(s) they want to use and install plugins for each.

Issues Resolved

https://github.com/opensearch-project/search-processor/issues/190

Check List

• [ ] New functionality includes testing.
  • [ ] All tests pass
• [ ] New functionality has been documented.
  • [ ] New functionality has javadoc added
• [x] Commits are signed as per the DCO using --signoff

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.

[codecov[bot]]

Codecov Report

Merging #191 (3745363) into main (ae4088e) will decrease coverage by 0.14%. The diff coverage is 0.00%.

@@             Coverage Diff              @@
##               main     #191      +/-   ##
============================================
- Coverage     83.39%   83.26%   -0.14%     
  Complexity      334      334              
============================================
  Files            42       43       +1     
  Lines          1259     1261       +2     
  Branches        154      154              
============================================
  Hits           1050     1050              
- Misses          132      134       +2     
  Partials         77       77              

Files Changed	Coverage Δ
...elevance/AmazonKendraIntelligentRankingPlugin.java	0.00% <0.00%> (ø)
...rch/relevance/actionfilter/SearchActionFilter.java	85.45% <ø> (ø)
...arch/search/relevance/client/OpenSearchClient.java	80.00% <ø> (ø)
...ch/relevance/configuration/ConfigurationUtils.java	66.66% <ø> (ø)
...arch/search/relevance/configuration/Constants.java	80.00% <ø> (ø)
.../configuration/ResultTransformerConfiguration.java	100.00% <ø> (ø)
...e/configuration/SearchConfigurationExtBuilder.java	67.64% <ø> (ø)
...evance/configuration/TransformerConfiguration.java	100.00% <ø> (ø)
.../search/relevance/transformer/TransformerType.java	100.00% <ø> (ø)
...draintelligentranking/KendraIntelligentRanker.java	78.09% <ø> (ø)
... and 33 more

[sejli]

This PR also addresses refactoring done in OpenSearch core, which should fix the daily builds. Thanks for updating the imports as well! 🎉

[msfroh]

Ignoring codecov, because it's confused about the coverage since it's ignoring all the moved files.

[opensearch-trigger-bot[bot]]

The backport to 2.9 failed:

The process '/usr/bin/git' failed with exit code 1

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-2.9 2.9
# Navigate to the new working tree
cd .worktrees/backport-2.9
# Create a new branch
git switch --create backport/backport-191-to-2.9
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 eb77879e694ca609929b0c1098620a6ebea4afda
# Push it to GitHub
git push --set-upstream origin backport/backport-191-to-2.9
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-2.9

Then, create a pull request where the base branch is 2.9 and the compare/head branch is backport/backport-191-to-2.9.