Function Compiler

Adds selector argument: nbt

Adds commands:

• function ... with entity ...
• execute store success storage ... double
• execute store success storage ... float
• execute store success storage ... int
• execute store success score
• return run

Added storing result and success support to:

• function (for all currently supported sub-commands)
• scoreboard players get (success storing is new)
• scoreboard players operation

Adds a config file: config/mcfc.json, this file contains currently only contains the enable_reporting config option, which enables/disables telemetry

Adds /mcfc sub-command: reload_config

Fixes bugs:

• execute on vehicle does not get compiled