Adheres to https://zeitgeist.subsquare.io/post/2

Send a batch of dispatch calls.

May be called from any origin.

- `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 call 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 will return `Ok` in all circumstances. To determine the success of the batch, an
event is deposited. If a call failed and the batch was interrupted, then the
`BatchInterrupted` event is deposited, along with the number of successful calls made
and the error of the failed call. If all were successful, then the `BatchCompleted`
event is deposited.

- **Problem Statement:** Lack of clarity on the Polkassembly Referendum process for users.
- **Significance:** Ensuring transparency and understanding in the decision-making process.
- **Proposed Solution:** Implementing a new interface to simplify the referendum process.
- **Expected Outcomes:** Improved user engagement and comprehension of the referendum process.

#36 Increase active collator set size to 24