add options for Cursor insert vs update

Description of the new feature/enhancement

Its basic feature on text editors and terminals to know which mode is cursor in:

• User INSERTs character at cursor position.
• User UPDATEs/REPLACE current character under cursor with type key.

Proposed technical implementation details

Simply add a default mode similar to Notepad++:

• when in INSERT - cursor is vertical bar - keeps blinking
• when in UPDATE - cursor is underline char - keeps blinking

Ideally split in 2 options:
INSERT MODE:

• type of cursor (already existing in windows terminal > settings > profiles > defaults > appearance)
• blinking: cursor-no-blinking, cursor-fast-blinking, cursor-slow-blinking
• color: rgb

UPDATE MODE:

• type of cursor (already existing in windows terminal > settings > profiles > defaults > appearance)
• blinking: cursor-no-blinking, cursor-fast-blinking, cursor-slow-blinking
• color: rgb

note: I also added a new "color" config for both cursor modes (INSERT and UPDATE) as i think its cool.

Thanks guys, keep up the good work ~

Start by reviewing the existing Windows Terminal cursor appearance settings and how cursor modes are represented. Define the scope for separate INSERT and UPDATE cursor type, blinking, and color options; done means the requested options and mode-specific visual behavior are specified and supported.