Debugger: Basic breakpoint improvements (#27687)

This PR does three things

- Right clicking within the gutter outside of the gutter fold area
bounds opens a breakpoint context menu
- Disabled breakpoints are now outline with the debugger accent color
instead of being fully colored at half opacity
- Clicking a breakpoint acts differently now
- Clicking a breakpoint while holding the platform modifier key will
disable/enable it
- Clicking a breakpoint hint while holding the platform modifier key
will set a disabled breakpoint
- Clicking a disabled breakpoint will enable it instead of deleting it

Release Notes:

- N/A

crates/editor/src/editor_tests.rs

@@ -17842,6 +17842,10 @@ async fn test_breakpoint_enabling_and_disabling(cx: &mut TestAppContext) {
         editor.disable_breakpoint(&actions::DisableBreakpoint, window, cx);
         editor.move_to_end(&MoveToEnd, window, cx);
         editor.disable_breakpoint(&actions::DisableBreakpoint, window, cx);
+        // Disabling a breakpoint that doesn't exist should do nothing
+        editor.move_up(&MoveUp, window, cx);
+        editor.move_up(&MoveUp, window, cx);
+        editor.disable_breakpoint(&actions::DisableBreakpoint, window, cx);
     });
 
     let breakpoints = editor.update(cx, |editor, cx| {