close #10240

Changelog:
- add: `desktop-environment` Java module to detect user environment configuration
- add: `ProjectsMigration` module containing the migration logic of the enso projects directory
- update: updated and cleaned up unused settings from the storage config
- add: `desktopEnvironment` TS module to detect user environment configuration in the `project-manager-shim`
- update: `project-manager-shim` with the new user projects directory