Update Buildscript, Fix Misc Bugs

[IntegerLimit]

This PR updates the buildscripts of this project to use GregTech CEu's Buildscripts, fixes the Teleporter replacing non-full blocks with obsidian (e.g. chests), and fixes the display of Custom Cakes in TOP.

Outcomes:

• The project can once again be developed and built
• The Teleporter now only replaces air, or blocks with a material of air (e.g. invisible lights generated by the feral flare lantern)
• Custom Cakes:
  • Now have proper names in The One Probe
  • Pick Block (creative) now works on them correctly
  • Allows removal of custom waila handlers, not needed now that Pick Block works properly

[IntegerLimit]

From the Nomi-CEu Issue linked above:

The voiding issue is actually really easy to reproduce:

1. Go to the void world with the void world cake, and replace one of the obsidian blocks with a chest. You can place something inside the chest if you would like.
2. Go to the overworld via any method
3. Go to the void world with the void world cake. Chest gets replaced by obsidian (due to the check being for fullBlock instead of air

[IntegerLimit]

As of b413f16 (#36), teleporter has changed:

• The obsidian platform now once again replaces both air blocks and non-full blocks with obsidian (same as previous behaviour)
• The replacement of air now occurs as long as the block is not air (instead of only on full blocks)
  • This check was implemented, instead of replacing it always, to prevent issues such as deletion of feral flare lights, and unnecessary replacements.