feat(preferences): Refactor and add UI to control Global preferences

[Gitesh307]

Fixes #7442
This PR introduces a new Global Preferences interface that allows Institution Administrators to configure database-wide settings such as auditing, date formats, and attachment thumbnail size directly from the UI instead of manually editing preference resources. It adds a dedicated page under the User Tools menu, guarded by Institution Admin permissions, and connects to new backend endpoints for retrieving and updating global preferences.

Checklist

• Self-review the PR after opening it to make sure the changes look good and
  self-explanatory (or properly documented)
• Add relevant issue to release milestone

Testing instructions

• Verify that the new Global Preferences page is accessible only to Institution Admins, settings (auditing, date formats, thumbnails) can be updated, saved, and persist correctly across reloads.
• Change and verify that all configuration options are applied

[grantfitzsimmons]

Nice work! So much progress!

There are two global preference files, named preferences, denoted by different headers:

#Remote User Prefs
#Wed Sep 27 17:21:50 CEST 2023

and

#Global Prefs
#Thu Jul 20 14:56:10 CEST 2023

This PR assumes that all preferences are in the global prefs resource, but some settings (like ui.formatting.scrdateformat) are only looked at in remote prefs. Users should not have their current date format lost when we release this, so we need to transition existing configurations if at all possible.

Right now, despite this being set, queries and other places do not look to this resource for the date format