We propose to open a bi-directional channel between Moonriver and Mangata X. Initially, the main use case will be to transfer MOVR and MGX between the two chains, but it can be further expanded to other use cases. The proposal also includes the MGX asset registration as xcMGX. Details can be found here: https://forum.moonbeam.foundation/t/mangata-x-proposal-open-accept-hrmp-channel-and-register-asset-xcmgx/664

Send a batch of dispatch calls and atomically execute them.
The whole transaction will rollback and fail if any of the calls failed.

May be called from any origin except `None`.

- `calls`: The calls to be dispatched from the same origin. The number of call must not
  exceed the constant: `batched_calls_limit` (available in constant metadata).

If origin is root then the calls are dispatched without checking origin filter. (This
includes bypassing `frame_system::Config::BaseCallFilter`).

# <weight>
- Complexity: O(C) where C is the number of calls to be batched.
# </weight>



1. Proposed to open a bi-directional channel between Moonriver and Mangata X. 
2. Will serve as a method to transfer MOVR and MGX between two chains initially, but can be further expanded to other use cases. 
3. Includes MGX asset registration as xcMGX. 
4. Details for the proposal can be found in the forum post.

#16 Moonriver <> Mangata X channel