Side V-Slot Trash Bin

* Note on V2: The vslot was a little big, so it had to tip a lot to get in, and if you have a bunch of filament peices in there, they could dump out. SO I made it a little less difficult to insert in the side.

This is a simple trash bin to snap into your Vslot on the ender-3. I have seen a bunch that slide in, but that makes it too difficult to pull out and dump, so this was made with a "half V-slot" so it can clip in and hang on the side. Just a nice place to brush your filament junk.