Runtime code Security Audit

[tomusdrw]

We need an audit of all the runtime code, which includes:

• Bridge Pallet (Fork Management for Substrate Pallet #369)
• Message Delivery (Message Lanes Delivery Protocol #215) & Message Dispatch (Call::decode dispatcher #211)

[tomusdrw]

ongoing

[tomusdrw]

Second round completed.

During this round of review of the Bridge bridge implementation, we found a few low-severity issues. However, there are no open high-severity issues as of now and while some things can definitely be improved, there is no showstopper and it is sensible to go ahead with the bridge deployment between Polkadot and Kusama, especially since the bridge will initially be in a test state where only privileged entities (root or bridge owner) can send messages.