[Config] add more option types + small serialization refactors

[SpaceWalkerRS]

Additions:

• More option types for primitives: byte, char, double, float, long, short.
• ModifiableOption: intended to be used for modifiable objects (e.g. lists).
  • getDefault and get implementations convert the value to an unmodifiable view.
  • Changes to the value should be done through the modify method.
• ListOption: implementation of ModifiableOption for Lists.
  • Implements the List interface for convenience.
• MapOption: implementation of ModifiableOption for Maps.
  • Implements the Map interface for convenience.
• A module for b1.3-b1.7.3.

Changes:

• Serialization refactors
  • Added 'object serializers' that are not tied to options or configs.
  • Option serialization has been simplified through the use of the new object serializers.
  • The medium for NBT serializers has been changed from NbtCompound to NbtElement to allow for more compact serialization of options.