[DOC] List Analyzers Through _cat

[macohen]

What do you want to do?

• Request a change to existing documentation
• Add new documentation
• Report a technical problem with the documentation
• Other

Tell us about your request. Provide a summary of the request and all versions that are affected.
This feature gives users the ability to list all analyzers available on their cluster. We are targeting 2.12 for this release.

What other resources are available? Provide links to related issues, POCs, steps for testing, etc.
opensearch-project/OpenSearch#5481

cc: @lukas-vlcek (the developer of this feature)

[macohen]

@lukas-vlcek are you able to provide documentation for this feature? Thinking this could go here: https://opensearch.org/docs/latest/analyzers/index/. Check out https://github.com/opensearch-project/documentation-website for the source for the docs if you haven't before...

Thanks!