Managed Preferences for Xcodes.app

[abiligiri]

Tell us how we can improve Xcodes
Allow Xcodes.app to disallow changes to preferences that are configured at the system level using managed preferences

Is your feature request related to a problem? Please describe.
It is common for some enterprise environments to require some preferences like install location, Xcode feed source, beta/release to be set by the administrator. This is mostly to meet some compliance requirements. This can be partially achieved by setting these values using MDM tool, but the end user can still override from in-app.

What would you like to see? How would you like it to work?
If a preference value is set by MDM, in-app settings could be greyed out or disabled, disallowing user from updating the same.

[abiligiri]

#569 is an attempt to restrict edits to preferences that are managed by MDM.

[adam-selby]

The option to define an allowed base version/restrict older versions from being installed would be really useful in an enterprise environment. Even with security and compliance concerns aside, there may be team requirements to remain on a version for a short period.

[abiligiri]

@MattKiazyk please provide feedback on this and associated pull request.