Function Compiler

Adds selector argument: predicate

Adds commands:

• execute on origin
• execute on target
• execute store result storage ... float
• execute if predicate
• execute unless predicate

Adds /mcfc sub-commands:

• profiler
  • disable - Disables profiler
  • enable - Starts profiling (possibly recompiles code)
  • print_trace - Prints last trace results in console
  • print - Prints profiler results in console
  • reset - Resets current results
  • save_trace - Saves last trace results to disk (debug/ folder)
  • save - Saves profiler results to disk (debug/ folder)
• recompile - Recompiles all functions
• show_diagnostics - Shows all errors from compilation

Fixes bugs:

• execute positioned ^ ^ ^ works only when there's an entity in context
• Local coordinate math does not calculate the correct location
• execute unless score ... matches a..b generates an infinite loop

Re-adds support for some missing entity types

Adds selector argument: advancements

Adds commands:

• advancement <grant|revoke> <players> only <advancement> [criterion]
• execute if function ...
• execute unless function ...
• execute store result storage ... double
• execute store result storage ... int (now supports non-1 scale)

Fixes bugs:

• Texts with non-default styles don't compile (affects 1.21.4)
• function ... with storage <storage> <path> does not get run from within compiled functions
• execute unless score ... <operator> has flipped conditions