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

[ConradIrwin]

I had forgotten about the irritation that the vim mode indicator also changes size, causing the diagnostics to move about; so you can't easily stack either without causing the UI to jump unnecessarily.

If we want to move it to the left, we could try and ensure the indicator always has the same width:

• -- NORMAL --
• -- REPLACE--
• -- INSERT --
• -- VISUAL --
• VISUAL LINE

Or we could abandon the plan of moving it, and note that although it's vim incompatible, putting it on the right avoids this problem...

[danilo-leal]

Isn't that just a Label inside a ButtonLike component? Couldn't we pass in a fixed width that's just a bit bigger than the biggest label so that it doesn't dance/jump around? Something along these lines:

        div()
            .w_32()
            .child(
                Label::new(format!("{} -- {} --", pending, mode))
                    .size(LabelSize::Small)
                    .line_height_style(LineHeightStyle::UiLabel),
            )
            .into_any_element()