Proof of Concept

[mustermeiszer]

The PoC provides the following capabilities. While still containing a lot of todos.

• Starting client and database with a clean state
  • Altering that state with a genesis config (i.e. the same as the current testing in substrate)
• Build a block for a
  • Stand-alone-chain and parachain (this does not mimic parachain envs correctly and sets inherent data to defaults)
• Build a block for a parachain (NOTE: This does not set the inherent on the relay correctly up to this point)
• Mutating any latest state of a database by providing mutable externalities
• Accessing any given state of a database immutable by providing immutable externalities

Closes #2 Closes #3 Closes #6 Closes #9 Closes #10