win: improve app access disabling and docs #138

This commit improves disabling app access by correcting minor issues,
adding missing access control configurations and adding more
documentation to increase maintainability and user understanding of
privacy settings, resolving #138.

- Introduce shared functions to streamline modifications of app access,
  improving maintainability and simplifying the codebase.
- Move disabling app access to first position in the category.
- Improve code comments for better clarity on generated outputs.
- Resolve error display in revert codes due to incorrect use of `reg
  delete` commands.
- Fix disabling app access to trusted devices disables access to account
  information, name and picture on older versions of Windows.
- Add missing privacy settings and configurations.
- Add more documentation to scripts
- Rename script names for consistency and clarity.
- Move disabling access to SMS/MMS to phone access disablement category.
- Set empty `REG_MULTI_SZ` values to null for GPO access settings to
  maintain registry integrity.