Proper command argument parsing

[Iapetus-11]

Features

• Add parser which parses different types for commands, based on the typehints/annotations from func.__annotations__
• Add ability to add custom parsers
• This should support all parsers in the below checklist
• Parsers should be structured into classes for ease of use
• For more information on commands, see here: https://wiki.vg/Command_Data

Reason

• Needed for PlayDeclareCommands (which is part of the join sequence)
• Makes making commands easier

Check List

• AbstractParser class to base parser structure off of
• Actually utilize type annotations and parsers in the command code

Parsers

• brigadier:bool
• brigadier:double
• brigadier:float
• brigadier:integer
• brigadier:string
• minecraft:entity
• minecraft:game_profile
• minecraft:block_pos
• minecraft:column_pos
• minecraft:vec3
• minecraft:vec2
• minecraft:block_state
• minecraft:block_predicate
• minecraft:item_stack
• minecraft:item_predicate
• minecraft:color
• minecraft:component
• minecraft:message
• minecraft:nbt
• minecraft:nbt_path
• minecraft:objective
• minecraft:objective_criteria
• minecraft:operation
• minecraft:particle
• minecraft:rotation
• minecraft:angle
• minecraft:scoreboard_slot
• minecraft:score_holder
• minecraft:swizzle
• minecraft:team
• minecraft:item_slot
• minecraft:resource_location
• minecraft:mob_effect
• minecraft:function
• minecraft:entity_anchor
• minecraft:range
• minecraft:int_range
• minecraft:float_range
• minecraft:item_enchantment
• minecraft:entity_summon
• minecraft:dimension
• minecraft:uuid
• minecraft:nbt_tag
• minecraft:nbt_compound_tag
• minecraft:time

[Iapetus-11]

Merging this issue into #266