cesar/cdk: Cashu Development Kit @ ba28f00e453f2830111a90a3e53d42c6aee22dd6

Cesar Rodas 8ebaa9c171 Make sure signatory has all the keys in memory		преди 2 месеца
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mint	8ebaa9c171 Make sure signatory has all the keys in memory	преди 1 месец
wallet	abdde307c6 Fix race conditions with proof state updates.	преди 2 месеца
common.rs	43ab1fdde1 Do not create the wallet struct directly; instead, call new. (#707)	преди 2 месеца
lib.rs	f7d9a1b5db Drop the in-memory database (#613)	преди 3 месеца