[DOC] Support College Student Contributor Initiative - Developer Documentation

[vagimeli]

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.
Develop new documentation for the college student contributor initiative. Topics include:

• Installing Dashboards plugins
• Setting up a simple dashboard
• Configuring Dashboards
• Glossary of commonly used Dashboards terms

What other resources are available? Provide links to related issues, POCs, steps for testing, etc.
POCs: @ashwin-pc, @joshuarrrr, @rednaksi91
Links:
https://opensearch.org/docs/latest/install-and-configure/install-opensearch/plugins/
https://opensearch.org/docs/latest/install-and-configure/configuration/
https://opensearch.org/blog/dashboards-plugins-intro/
https://github.com/opensearch-project/documentation-website/blob/main/TERMS.md

[Naarcha-AWS]

Removing the 2.5 milestone since this isn't tied to a release.

[vagimeli]

@ashwin-pc We have existing user documentation for installing and configuring Dashboards, installing OpenSearch and Dashboards plugins, and OpenSearch terms. User documentation for creating your first dashboard is in progress. I'm tracking to send out the PR for review by 1/9.