3d printed Watermelons now with Outlines and more!

You can now print watermelons with outlines and they look like they jumped right ouf of a cartoon!

Furthermore Watermelon Red parts can now be printed split into Red and Seeds. So there is no multi color printer required for printing seeds anymore.

I also improved the Keychain hole connections for the slices so they hold significant stronger.

Here is the rundown of the new changes for the 3d printing zips. I also added new BambuStudio plates as 3mf files which are then ready to print. They might also work with other Slicers.

V4:

- Improved White with KeyChainHole connection for Slices (should be significant stronger)

- Fixed some missing parts

- Fixed some wrong orientations

V3:

- Added Hollow/Split Parts for all REDS except "Watermelon-TinySlice-60" and 45 WHITE

- Added Seeds/Fill parts for red Hollow parts (This allows seeds printing without Multi-color printer)

- Added Outlines add on parts (some info in the Tiny-45 readme)

- Added various stencil texts as RED hollow parts

- Added some text as seeds parts for Tiny-45

The new instructions showing the three main variants