Replace with suggestion and more

[JohnBS1]

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Is your feature request related to a problem? Please describe.
Other spell checkers let you Ctrl-. to replace underlined word with suggested.
Does not seem to process document on load or edit, or when prompted to process document. Only process selection works (ssh-fs/remote workspace).

Describe the solution you'd like
Ctrl-. replaces the incorrect word with the ltex suggested replacement if one is available.
Better instructions or push-button process for adding rules to whitelist eg $variablenames can be skipped, have the $ stripped before checking, or split for eg camelCase
Add word to dictionary within Problem dialogue

Describe alternatives you've considered
Code Spell Checker (does not work with remote workspaces)

Additional context