Data management and Globus pages reorganization

[bdu-birhanu]

Pull Request

Intent

The aim of this PR is to reorganize data management and Globus pages.

Proposed Changes

Many updates throughout the data management and Globus tutorial pages. Below are the major updates:

- Update contents and screenshot examples with the Globus collection name "UAB RCS Cheaha HPC.
- Moved storage contents together under one subdirectory  "storage"
- Moved Globus content together under one subdirectory "globus"
- Added a new index page for Globus page.
- Move the  Globus Connect personal (GCP) content to its own separate page.

Changes to Section Headers

- Globus Tutorials for Individual Researchers -> Globus for Individual Researchers
- Globus Tutorials for UAB Research Organizations -->Globus for UAB Research Organizations

Changes to Page URLs

- cheaha_gpfs_storage.md -> storage/cheaha_storage_gpfs/index.md
- lts/lts.md -> storage/lts/index.md
- lts/sharing.md -> storage/lts/iam_and_policies.md
- lts/lts.md -> storage/lts/index.md
- lts/policies.md -> storage/lts/iam_and_policies.md
- lts/sharing.md -> storage/lts/iam_and_policies.md
- transfer/globus.md -> transfer/globus/index.md
- tutorial/globus_individual_tutorial.md -> globus/globus_individual_tutorial.md
- tutorial/globus_organization_tutorial.md -> globus/globus_organization_tutorial.md 
- tutorial/globus_group_management.md -> globus/globus_group_management.md

Related or Fixed Issues

Fixes #1106
Fixes #1123

Accessibility Checklist

I have ensured all of the following for new or changed content:

• all images have appropriate alt text. Guidelines
• all images with text have sufficient contrast ratio. Checker
• all image text is transcribed or described in body text.
• all technical terms, jargon, and abbreviations are introduced before they are used.

Style Checklist

I have done all of the following:

• searched for other relevant pages and crosslinked from my content to them.
• searched for other relevant pages and crosslinked from them to my content.
• added redirects in mkdocs.yml for any moved headers or pages.
• defined new technical terms, jargon, and abbreviations in the glossary.
• searched for existing technical terms, jargon, and abbreviations in the glossary and added crosslinks to them.
• properly formatted and introduced key branding terms. List here.

[wwarriner]

Well done!

If you aren't already, look for a VSCode extension "Path Intellisense", it helps with managing links between files giving you autocompletion for relative paths. It's not perfect, but it's helpful.

There are a few spots where we can collapse relative links, and the data management index page needs a table of contents or something similar.

Those things and this PR is good to merge.

[wwarriner]

Looks good, I think we can merge all of the Globus content together under one subdirectory "globus", removing the "tutorials" subdirectory.