This proposal aims to open HRMP channel between Statemine & Picasso. For more context please read here.

Let me explain the technical details of this call. It is a batch transaction with two calls:

1. A force transfer from Kusama treasury (`F3opxRbN5ZbjJNU511Kj2TLuzFcDq9BGduA9TgiECafpg29`) to Statemine (`F7fq1jSNVTPfJmaHaXCMtatT1EZefCUsa7rRiQVNR5efcah`). The amount is 11 KSM. 10 KSM will be used for deposit to accept (5 KSM) and open (5 KSM) HRMP channel. 1 KSM will be used by Statemine parachain to pay for transaction execution fee on Kusama. Note that 1 KSM is more than enough and unused funds will be trapped in XCM asset trap. But that's totally fine as it can be claimed & used for transaction fee in later XCM executions.

2. Send XCM message to Statemine to execute a transaction with superuser (root) permission.

The XCM message to Statemine is `0x1f00010100020c000400000000070010a5d4e81300000000070010a5d4e800060002286bee5c1802083c01270800003c0027080000e803000000900100`, which can be decoded on Statemine, and it is `polkadotXcm.send`. It sends a XCM message back to Kusama, to with 1 KSM for transaction fee and perform a transact of call `0x1802083c01270800003c0027080000e803000000900100`.

The call is is a `batchAll` that accepts open channel request from Picasso, and make an open channel request to Picasso.

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.

- `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>


1. A force transfer from Kusama treasury to Statemine for 11 KSM, 10 of which will be used for deposit to open HRMP channel between Statemine & Picasso, and 1 KSM will be used by Statemine parachain to pay for transaction execution fee on Kusama
2. An XCM message is sent to Statemine to execute a transaction with superuser permission to open channel request from Picasso, and make an open channel request to Picasso.

#240 Open HRMP channel between Statemine & Picasso

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