This is a proposal for four parachains to open HRMP channels with Statemint. Each channel opening consists of:

- A `forceTansfer` of 20 DOT from the Treasury to Statemint sovereign account.
- A `forceOpenhrmpchannel` from Statemint (1,000) to `ParaID`.
- A `forceOpenhrmpChannel` from `ParaID` to Statemint (1,000).

ParaIDs for each parachains requesting the channels and proposals requesting this by the parachain teams:

Litentry: 2,013
Composable: 2,019
Polkadex: 2,040
Zeitgeist: 2.092

Schedule a majority-carries referendum to be tabled next once it is legal to schedule
an external referendum.

The dispatch of this call must be `ExternalMajorityOrigin`.

- `proposal_hash`: The preimage hash of the proposal.

Unlike `external_propose`, blacklisting has no effect on this and it may replace a
pre-scheduled `external_propose` call.

Weight: `O(1)`

Send a batch of dispatch calls.
Unlike `batch`, it allows errors and won't interrupt.

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 dispatch 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>

- This is a proposal for four parachains to open HRMP channels with Statemint.
- Each channel opening involves transferring 20 DOT from the Treasury to Statemint's sovereign account.
- There will be a forceOpenhrmpchannel from Statemint to each of the four parachains.
- There will also be a forceOpenhrmpChannel from each parachain to Statemint.
- The ParaIDs for the parachains are Litentry (2,013), Composable (2,019), Polkadex (2,040), and Zeitgeist (2.092).

#414 Batch of HRMP Channels with Statemint