Remove OPCODE_LINE from GDScript
Created by: bojidar-bg
Additionally, refactor ScriptDebugger::breakpoints
a bit. Also, make OPCODE
macros more similar between the switch and jump table versions.
I think my implementation still has a few bugs and rough spots, but I'm happy to announce that it works without crashing or getting into endless loops just fine.
This PR is mostly a PoC of something I was thinking of for some time now, but if deemed useful, I could try to fix the remaining issues (most of which are one-by-off errors here and there).