[FEAT] Add spell checker to commit message

[JackWP1]

Is your feature request related to a problem? Please describe

This is more of a nice-to-have to add a spell checker to commit message input.

Describe the solution you'd like

A spell checker for both the commit message and commit description. And if possible, it links to your IDE dictionary of custom spellings (if present) to add frequently used miss-spellings.

Additional context

[yi-Xu-0100]

👋 @JackWP1, Glad you like the extension, but with the auto-completion and spellcheck you mentioned, I feel like this might be too functionally heavy for the extension. It is more basic for "Commit by typing with completion" type extension. Of course, if you have a mature plan, I will be happy to accept your PR. 😊