[bug] Disabling the extension wont actually disable highlighting

[Derpius]

Describe the bug
Due to the way the language server loads EmmyLua extensions via the config, and due to not being able to edit the config during the deactivate event, it's currently impossible (to my knowledge) to actually remove the bindings automatically when disabling/uninstalling the extension

I have however added code to disable the extension from deactivate in the event that this limitation is removed

To Reproduce
Steps to reproduce the behaviour:

1. Install the extension
2. Open a Lua file
3. Disable the extension and reload vscode
4. The bindings are still active

Expected behaviour
The extension would disable its bindings on deactivation

Additional context
microsoft/vscode#45474
Ketho/vscode-wow-api#20

[Derpius]

This should actually be fixed in the new version of the extension, as it removes the annotations file on deactivate