Indentation settings help text

[alisonjo315]

See #8 for background.

Maybe the help text under "Twig-language-2: Tab Size" could say:

0 will default to the editor's tab size (editor.tabSize). This formatter will not use the indent_size setting declared in .editorconfig files.

And maybe the help text under "Twig-language-2: Indent Style" could say:

Choose to indent using tabs or spaces. This formatter will not use the "Editor: Insert Spaces" setting, nor will it use the indent_style setting declared in .editorconfig files.

And, maybe somewhere on the extension info page (i.e. under Installation) -- or among the extension settings -- it could say:

Restart VS Code after making changes to Twig-language-2 settings.

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Originally posted by @alisonjo315 in #8 (comment)