87456: Configuration to increase the terminal cursor width

[BuraChuhadar]

This PR fixes #87456

This PR would set terminal bar cursor width.

[ghost]

Thank You @BuraChuhadar.

I think it will be nice if the option is called as cursorWidth to stay consistent with the editor.cursorWidth option and xterm's internal cursorWidth option.

Besides that, src/vs/editor/common/config/editorOptions.ts explicitly mentions when this option will be effective (i.e when cursorStyle is "line"):

cursorWidth: register(new EditorIntOption(
    EditorOption.cursorWidth, 'cursorWidth',
    0, 0, Constants.MAX_SAFE_SMALL_INTEGER,
    { markdownDescription: nls.localize('cursorWidth', "Controls the width of the cursor when `#editor.cursorStyle#` is set to `line`.") }
)),

So to keep it consistent, the help text in the code src/vs/workbench/contrib/terminal/browser/terminal.contribution.ts can be made:

markdownDescription: nls.localize('terminal.integrated.cursorWidth', "Controls the width of terminal cursor when `#terminal.integrated.cursorStyle#` is set to `line`.")

Let me know if I need to do it as an extra commit!

[BuraChuhadar]

@varmanishant added the changes you asked. Let me know if you have other feedback.

[ghost]

Appreciate, @BuraChuhadar .

[Tyriar]

Tested with updated xterm and it works great, thanks!