Support Borsh Serialization

[cybersoulK]

while the orphan rules do not get relaxed, we must support borsh.

Because: it's the only one allowing enums to respect repr 1 byte, i tried 5 different crates. (bincode, postcard, rykv, speedy, borsh)

that increases throughput by 25% in multiplayer games for udp state data, like compact positions.
for example. Enum - [u16; 3] (position) [u8; 3] (rotation)

1000 bytes instead of 1300 per udp package.
postcard and bincode (which use serde) with varint enabled, decreases the enum size, but increases u16 from 2 bytes to 3 bytes