feat: Support for DCA 1 block interval

[j4m1ef0rd]

Pull Request

Closes: PRO-2354

Checklist

• I am confident that the code works.
• I have written sufficient tests.
• I have written and tested required migrations.
• I have updated documentation where appropriate.

Summary

• Refactored the dca state to hold a List of scheduled swap ids instead of just one.
• Refactored the swap queue so we do not need to know the block a swap is in to reschedule/cancel it.
• Refunding a failed swap will also cancel any other swaps that are scheduled for that swap request.
  • New event SwapCanceled.
• Rescheduling a swap will also reschedule any other swaps that are scheduled for that swap request.
• Refactored the dca state functions to split them up for more control.
• Init swap request now schedules 2 chunks if the interval is 1.
• When a swap completes it schedules the next chunk for the swap request, not necessarily a consecutive chunk.
• Added tests to cover the new 1 block interval.
• Changed the dca test in the bouncer to cover the 1 block interval.
• Refactored cf_scheduled_swaps rpc.
• Added migrations for the swap queue and the dca state

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✨ Finishing Touches

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[codecov]

Codecov Report

❌ Patch coverage is 85.47170% with 77 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...-swapping/src/migrations/swap_request_migration.rs	0%	33 Missing ⚠️
...cf-swapping/src/migrations/swap_queue_migration.rs	0%	28 Missing ⚠️
state-chain/pallets/cf-swapping/src/lib.rs	94%	12 Missing and 1 partial ⚠️
state-chain/runtime/src/lib.rs	0%	0 Missing and 3 partials ⚠️

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