MC Bedrock 1.16.100.56 beta - New bugs (Sept 19, 2020)

Minecraft Bedrock 1.16.100.56 beta
-Added minecraft:placement_filter component which allows the player to set conditions for where the block can be placed.
-Added serialization to Block Descriptor
-Added static anyMatch functions to BlockDescriptor to compare a list of BlockDescriptors against: Block*, BlockLegacy, or BlockDescriptor
-Added a function to compare two BlockDescriptors. This covers: matching blocks, any tag of either descriptor match, block states with matching permutations
-Changed the BlockDescriptor BlockLegacy member variable to a Block* so we can set the block states during deferred block resolution and get the block with the states set
-Removed all the existing Block* json parsing
-Added unit tests to verify parsing and serializing block descriptors
-Added unit tests to verify comparing a BlockDescriptors against each other
-Added unit tests to verify getting a block from BlockDescriptor with the states set