[Feature]: Poll completed-deposits contract map prior to submitting complete-doposit contract call

[cylewitruk]

Feature - Poll completed-deposits contract map prior to submitting complete-doposit contract call

1. Description

To help avoid wasting fees on failed complete-deposit contract calls due to replay, we could use the getmapentry Stacks RPC to poll the completed-deposits map in the registry contract to check if the node's view of the contract has already seen the contract call, and avoid submitting it again.

The map could be checked together with the deposit outpoint:

;; Data structure to map successful deposit requests
;; to their respective sweep transaction. Stores the
;; txid, burn hash, and burn height.
(define-map completed-deposits {txid: (buff 32), vout-index: uint}
	{
		amount: uint,
		recipient: principal,
		sweep-txid: (buff 32),
		sweep-burn-hash: (buff 32),
		sweep-burn-height: uint,
	}
)