Gamestate snapshots (#8819)

* Add initial interface.

* Implement move operator in MemoryStream

* Add pod array serialisation traits.

* Add push_back with move semantics to CircularBuffer

* Initial implementation of GameStateSnapshots

* Add GameStateSnapshots to Context.

* Add mp_desync console command.

* Compare sprite data and fill change list.

* Minor changes.

* Proof of concept.

* Calculate offset instead of using offsetof

* Implement game state difference detection

* Update mp_desync console command.

* Fix identification of sprite remove/add.

* Fix crash when only one peep in park when using mp_desync

* Output state differences into user directory desync folder.

* Add desync debugging as an option.

* Add information to network status when a desync report was created.

* Cast to proper type for %llu.

* Update xcode project

* Add more information to the diffed data.

* Remove client-only relevant fields.

* Cleanup.

* Add better name output for misc sprites

* Add srand0 and tick information to the output

* Bump up network version

* Cleanup

* Set desync_debugging to false as default

* Apply suggestions

data/language/en-GB.txt

@@ -3765,6 +3765,7 @@ STR_6314    :{WINDOW_COLOUR_2}Dest: {BLACK}{INT32}, {INT32} tolerance {INT32}
 STR_6315    :{WINDOW_COLOUR_2}Pathfind Goal: {BLACK}{INT32}, {INT32}, {INT32} dir {INT32}
 STR_6316    :{WINDOW_COLOUR_2}Pathfind history:
 STR_6317    :{BLACK}{INT32}, {INT32}, {INT32} dir {INT32}
+STR_6318    :Network desync detected.{NEWLINE}Log file: {STRING}
 
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