Need to disable extensions not just uninstall them #2882
Description
When looking for problems with intellisense (#2850) I wanted to clean up my config by disabling all extensions. However they can only be deleted.
This would be a generally useful option in case extensions are causing problems.
- Figure out format to store extensions disablement in settings
- Move extension scanning to Renderer (with @joaomoreno)
- Ignore disabled extensions when scanning for them at runtime
- Provide UI for enabling / disabling an extension for a workspace or globally
- Telemetry