Updated project generator script to always order assemblies (it didn't do that for me on Linux) and to fix minor issues

- Added support for seat enter and exit events and a test for them
- Added support for entering and exiting seat from code
- Changed the Id property of ECS objects to non-abstract, requiring it in the constructor, so that the Player class can inherit EcsObjectBase
- Added a weird constructor to EcsObjectBase that allows running code to determine the object Id
- Added interface for engines that receive entity functions
- Exposed the entity submission scheduler and removed it from FullGameFields because it moved from there
- Made the Game.Enter event only fire after the first entity submission so the game is fully initialized and the local player exists
- Added all seat groups to the dictionary

- Added a wrapper class that handles the individual wrapping of event handlers to individually handle exceptions - now it tracks the wrapped event handlers so it can unregister them properly
- Fixed an exception that happened when two ECS objects were created with the same EGID
- Added support for returning an existing ECS object if it exists instead of always creating a new one
- Added a parameter to the entity query extension methods to override the group of the ECS object (could be used for the player properties)

Added Cluster.GetSimBodies() and SimBody.GetBlocks()
Fixed some issues with IDs and bad handling of them

Fixed Assert.Equal()
Changed tests to reflect changes
Added Block property to the block event args
Completely removed sync things

Fixed Assert.Equal()
Changed tests to reflect changes
Added Block property to the block event args
Completely removed sync things

Fixed setting player properties
Changed player rotation to float3
Added constructor for BlockColor with an index param
Improved Player.Exists() ~~hopefully~~

Added center of mass
Removed delta velocities