Lib Network Stack

Changes:

• Updated to 1.16-pre.2.
• Allowed this version to be loaded in any version of 1.16.
• Print more debugging information about a packet if it failed to read correctly.
  • If "debug" or "debug.request_types" is enabled then this will include a packet payload breakdown.
• Added a config, with two options:
  • "debug": an alternative for "-Dlibnetworkstack.debug=true"
  • "debug.request_types": requests debugging type information from the other side.
• Added a new interface: "IBlockEntityInitialData", which can be used to send custom data to each player instead of vanilla's "toInitialChunkDataTag()", and "toUpdatePacket()". (Although this is mostly useful for BE's that use LNS exclusively for networking).
• Exceptions thrown while reading a packet will now cause the network connection to be disconnected, as minecraft used to swallow any problems.