Reviewed-on: https://git.killuaa.dev/Project-Meartis/meartis-client/pulls/12
Reviewed-by: Snow Boo <snow@noreply.localhost>

Reviewed-on: https://git.killuaa.dev/Project-Meartis/meartis-client/pulls/8
Reviewed-by: Snow Boo <snow@noreply.localhost>

Closes issues #6 and #7

- Implemented basic handshaking logic as well as logging in and reaching the "play" state
- Introduced a PacketBuilder for easier packet creation
- Created a new data type called PrefixedArray ( According to the minecraft.wiki's documentation)

Reviewed-on: https://git.killuaa.dev/Project-Meartis/meartis-client/pulls/2
Reviewed-by: Snow Boo <snow@noreply.localhost>