* Start a network serialiser for entities
will be used only for checksums and replay diffs
* Continue work
* Use the new serailser for checksums
* Use new serialiser for replays
* keep compilers happy
* Try create checksum stream
* Fix compiling
* Split off class into seperate file
* Update Xcode project
* Increment network version
* Fix pragma mistake
* Fix none network builds
* Update replays
* Improve ChecksumStream and use FNV internally
* Small cleanups
* satisfy compilers
* Revert change of checksum size to simplfy rerecording
* Zero initialise data
* Fix serialiser
* Update replays again
Co-authored-by: Michael Steenbeek <m.o.steenbeek@gmail.com>
Co-authored-by: Matt <m.moninger.h@gmail.com>
