Improve debug selection tool

[Geokureli]

As discussed in #2662 we should improve the selection tool:

• Clicking should always select the most top-drawn object overlapping the cursor.
• Shift-click to toggle the selection of the top-most object
  Additionally, it would be a good idea to have a button to toggle ignoreDrawDebug on the selected object(s)

Pinging @ACrazyTown, if you don't end up getting to this, let me know

[ACrazyTown]

Just wondering, where would the button go?

[Geokureli]

Just wondering, where would the button go?

The button to toggle ignoreDrawDebug? Good question. Maybe in the box with the selection and mover tool, but it might be hard to convey that use to people. Maybe this is something that should be handled in flixel-studio. Moreso, the button might be best left as a separate issue

[ninjamuffin99]

fixed by #2964 ?

[Geokureli]

1 item still remains, ill have to move it to a new issue and close this when i get a chance