Ordinal swaps #1
Description
Add ordinal inscription swaps to LP library.
We can piggy-back off of existing ordinal marketplaces like magic eden and unisat and use their API to buy inscriptions in a way that the LP acts as a client. For atomic transaction lock we let the user lock-up funds locked to a specific txId (which is the ordinal buy execution transaction).
The issue is that the marketplace itself is the last signer, we therefore need to monitor the mempool and if the transaction isn't signed and broadcasted by the marketplace in e.g. 1 minute, we must double spend one of the used inputs - we have to do this because the marketplace can be evil and broadcast the transaction later at point when the smart chain escrow is already refunded by the user, leading to loss of funds for the LP