replace packet class names with packet type registries

[crosby-moe]

Type of change

• Bug fix
• New feature
• Needed internal rewrite

Description

• replace usages of Class<? extends Packet<?>> with PacketType<? extends Packet<?>>
• use modern Clientbound & Serverbound naming conventions in api rather than the old C2S & S2C
• fully remove PacketUtilsUtil

addons using PacketUtils or PacketListSetting will break, existing configs will not

migration is simple:

• Class<? extends Packet<?>> -> PacketType<? extends Packet<?>>
• PacketUtils#getName(packet) -> packet.type().toString()
• PacketUtils#PACKETS -> PacketUtils#getPackets
• PacketUtils#getS2CPackets -> PacketUtils#getClientboundPackets
• PacketUtils#getC2SPackets -> PacketUtils#getServerboundPackets

Related issues

supersedes #4748

How Has This Been Tested?

the J

Checklist:

• My code follows the style guidelines of this project.
• I have added comments to my code in more complex areas.
• I have tested the code in both development and production environments.