Make new intellisense variables apply to all commands
Make new intellisense variables apply to all commands

The tow new variables
    - latex-workshop.intellisense.optionalArgsEntries.enabled
    - latex-workshop.intellisense.useTabStops.enabled
apply to snippets in commands.json also. It makes the intellisense
mechanism coherent over all the infromation sources.

Maybe we could only apply the useTabStops setting to commands related to
cite and ref?

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