* drop workspace ID from workspace file

* make folders types an object instead of just string

* fix compile

* polish relauncher for id change

* migrate old workspace format to new on startup

* more migration from previous workspace id

* more migration code

* change folder format to be a path

* support for relative paths in workspace file

* fix of ctor call

* put root validation and filtering into workspace

* ensure we always have file resources

* fix tests

* add tests for workspace

* 💄

* linting

Fixes #16829

Fixes #16829

Notify the user that backups exist but have not been restored if the folder to be restored no longer exists (fixes #14705)

Just in case

EnvironmentService's config may be stale.