-   **Description:** This referernda contains following changes:
    -   Whitelisting State Machines
-   **Desired outcome:**
    -   Hyperbridge pallet requires state machines to be whitelisted before any consensus proofs can be accepted, Hyperbridge included. This ensures that solochains are not spammed with consensus proofs of unwanted chains.
-   **Benefit for the stakeholders:**
    -   This adds new state machines which produce GRANDPA consensus proofs to the pallet whitelist, enabling trustless cross-chain communication with the state machines in question.

Add some a state machine to the list of supported state machines

#23 Whitelisting State Machines