Suggestion for normal mode key mappings

[pourya7]

For many users including myself, we are experiencing slow loading, a great feature would be to make this plugin async from ts server and not wait for the server. Also, I believe the following key mappings would help for plugin managers like vim-plug where we can simply add conditions to load this plugin.

:TsuEnable: to load the plugin and server asynchronously
:TsuDisable: kill the server and exit

something like :ALEEnable , :ALEDisable