Fix block interaction outside vanilla height limits

[Jakfut]

C07PacketPlayerDigging and C08PacketPlayerBlockPlacement Y values were serialized as unsigned byte, causing beaking/placing blocks outside of 0...255 to not work on dedicated servers

[Jakfut]

fixes #117

[DarkShadow44]

Good catch, unfortunately this only happens in MP - in SP serialization is not used, the packages are passed directly as objects. Very annoying.

That said, there is more packets like S28PacketEffect, S0APacketUseBed and probably a bunch more.

Code looks fine for me, do you want to add the other packages as well or merge it as-is?

[Jakfut]

S28PacketEffect was fixed in #119
S0APacketUseBed is weird, its a signed byte for whatever reason, sleeping worked fine at -10, +110 and +130 and I did not see any visual bugs either, so I guess its fine?

[DarkShadow44]

S28PacketEffect was fixed in #119 S0APacketUseBed is weird, its a signed byte for whatever reason, sleeping worked fine at -10, +110 and +130 and I did not see any visual bugs either, so I guess its fine?

I'll look into it when I find time, I guess.