UTF-8 mouse reporting

src/terminal/ansi.zig

@@ -80,6 +80,9 @@ pub const Mode = enum(u16) {
     /// to track mouse movement.
     mouse_event_any = 1003,
 
+    /// Report mouse position in the utf8 format to support larger screens.
+    mouse_format_utf8 = 1005,
+
     /// Alternate screen mode with save cursor and clear on enter.
     alt_screen_save_cursor_clear_enter = 1049,