Added some TODOs as well

And not storing custom block data for now

- Fixed the crash on second time start
- Tweaked more stuff about the block

Breaking changes coming from FMOD 2.0:
- Audio[int index] changed to Audio[PARAMETER_ID index]
- Audio.Parameters removed

It adds it with its ID as key but the ID hasn't been set at that point
It works until the second simulation start now

The block can be selected but not placed

It shows up in the inventory but crashes when selected

Added support for getting the player's current building mode (build, color, config, blueprint)
Added support for getting the current game's mode (building, playing, prefab etc.)

Removing blocks from groups when they are removed from the game
Attempted to update graphics when changing blocks
Disallowing changing the block group after creation, now that we can copy blocks

Fixed getting the selected blueprint
Fixed block groups not being assigned to first block

Added a way to store block groups as blueprints
Blocks can be added/removed from block groups, although it doesn't work well atm
Added some patches to the test class in an attempt to debug an unrelated issue
Added a command to test placing a block group
Added a SelectedBlueprint property to the Player class

Fixed compilation and loading issues for 2020.10.27.17.13

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

Only works if the constructors are used

Progressed a lot