Move Vim mode indicator to the left side of the status bar

[helgemahrt]

Addressed the first request on issue #14093, as discussed in #22048

Release Notes:

• Improved Vim mode indicator visibility by moving it to the left of the status bar

[mrnugget]

I'm not sure about this. I don't like that it moves the diagnostics & other messages when changing the mode.

[helgemahrt]

We could make it fixed length. @ConradIrwin suggested it should go to the left of the diagnostics, so I’d like him to chime in here as well 😊

[danilo-leal]

+1 to fix its width! And also, it'd be great to move this to the right of that divider that line. That's there to separate status bar controls that open up panels vs. other actions that do something else.

Edit: coming back here as I just read the discussion in the previous PR! The ideal layout I'm thinking of it is:

[maan2003]

why are we doing -- NORMAL -- instead NORMAL

[0x2CA]

why are we doing -- NORMAL -- instead NORMAL

Vim is displayed like this.
Of course I think this should be configurable and allow different colors for different modes
These already have corresponding issues