Move index management from plugin section to management section

[Hailong-am]

Description

Move Index Management and Snapshot Management from plugins section into Control center(original Management) section

Issues Resolved

#758
opensearch-project/OpenSearch-Dashboards#4133

Check List

• Commits are signed 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]

Codecov Report

Merging #741 (10588ce) into main (13fb97f) will decrease coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #741      +/-   ##
==========================================
- Coverage   63.40%   63.37%   -0.03%     
==========================================
  Files         340      341       +1     
  Lines       11540    11545       +5     
  Branches     2238     2239       +1     
==========================================
  Hits         7317     7317              
- Misses       3649     3654       +5     
  Partials      574      574              

see 2 files with indirect coverage changes

[opensearch-trigger-bot]

The backport to 2.x 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.x 2.x
# Navigate to the new working tree
cd .worktrees/backport-2.x
# Create a new branch
git switch --create backport/backport-741-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 4352f54c564d02d36ce6b7b412a9875d6254ddb8
# Push it to GitHub
git push --set-upstream origin backport/backport-741-to-2.x
# Go back to the original working tree
cd ../..
# 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-741-to-2.x.

[opensearch-trigger-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-741-to-2.9
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 4352f54c564d02d36ce6b7b412a9875d6254ddb8
# Push it to GitHub
git push --set-upstream origin backport/backport-741-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-741-to-2.9.