Rewrite the block entity system

[IntegratedQuantum]

The main goals here are to allow multiply block entities per block and improve behavior on addon and code changes.
Relevant changes are

• changing how a component is stored in binary, to address this I plan to add a version number to the binary format.
• changing composition of a block entity (e.g. removing the inventory), to fix this I plan to keep the component alive but inaccessible, so you cannot open the inventory, but it drops when broken.

Remaining work:

• Use a global id for all block entities
• Keep track of the components independently of the block type, a block entity without any components should be removed.
• sign data doesn't appear to get stored on the server correctly
• refactor all the naming from block entity type to block entity component type
• remove the onInteract function from the VTable and use the per block onInteract callback instead
• make a block entity palette for binary storage
• Revise the storage format and migrate the old one
• Rethink how data is shared between server and client (→ When placing a chest and instantly opening it (with 1 ms break/place delay), the server sometimes rejects the corresponding open inventory command #2561)
• Assert that all client block entity updates happen on the render thread
• Ensure that empty component and entities are properly removed
• Remove blockEntityUpdate protocol, it only contains unrelated helper functions at this point