[META] Update the GitHub repo to make use of the newest features

[Unknown6656]

• update issue templates
• make bug issue template interactive
• transition to the newer Github project system (https://github.com/users/Unknown6656/projects/2)
• use discussion feature (#194 )
• check why tf the appveyor CD builds are failing (probably missing tests, see #28 ). covered by the following commits:
  • 1b5fe1f
  • 7c88dc7
  • 93e05f5
  • fc93768
  • 95d3204
  • 8a14e44
  • 4592ebd
  • b45f28a
  • e73fb21
  • c5c0ae9
• split repo (see https://github.com/Unknown6656/AutoIt-Interpreter-old/, moved with e96dab7)