:sparkles: Allow using withdraw cells in Transfer and Deposit

[doitian]

Is there an existing issue for this?

• [X] I have searched the existing issues

Describe The Problem

Users must claim the withdraw cells first before using them in Transfer/Deposit. Indeed, when the withdraw cells are ready, they can be used as normal CKB cells (except that we have to add the required header deps and witness).

Suggest A Solution

• [ ] Allow Transfer/Deposit to use the available withdraw cells as inputs.

Anything else?

No response

[doitian]

Design

Implement a new cell indexer.

• Set constant E = 180*1800, which is the max block numbers in 180 epoches.
• First get the indexer tip number T.
• Get cells using indexer:
  • For cells which block number < T - E, emit both normal ckb cells and the dao withdraw cells.
  • For cells which block number >= T - E, only emit normal ckb cells
• If there's still not enough ckb cells for the transaction
  • Get withdraw cells from T-E, and check whether they are available. Emit only the available withdraw cells.