cesar/cdk: Cashu Development Kit @ proto/independent-signatory-with-custom-units

Cesar Rodas b12c0346f8 WIP		8 月之前
..
proto	b12c0346f8 WIP	8 月之前
common.rs	b12c0346f8 WIP	8 月之前
db_signatory.rs	b12c0346f8 WIP	8 月之前
embedded.rs	db251fa837 Apply suggestions from code review	8 月之前
lib.rs	8ea2a17e80 Fixed dependency	8 月之前
main.rs	edf55ade3b WIP	8 月之前
signatory.rs	b12c0346f8 WIP	8 月之前