Add more VScode commands for ltex

[maxbruening]

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Is your feature request related to a problem? Please describe.
when going through a document to accept suggested changes, hide false positives, add words to the dictionary, or disable rules, it takes unnecessary clicks/keyboard strokes to do this. Since I am coding by voice for accessibility reasons, this creates an extra hassle.

Describe the solution you'd like
I would like to have VScode commands for the following actions: hide false positives, add words to the dictionary, disable rules. I would then be able to map those VScode commands to voice commands.

Describe alternatives you've considered

Additional context
I'm using the talon software to create and edit latex documents by voice. See my fork of the mathfly talon repository: https://github.com/maxbruening/mathfly-talon