test: first mint unit tests #980

Job	Run time
Format	4s
Build WASM (stable, -p cdk)	33s
Build (stable, -p cdk)	1m 15s
Build WASM (stable, -p cdk --no-default-features)	18s
Build (stable, -p cdk --no-default-features)	14s
Build WASM (stable, -p cdk --no-default-features --features wallet)	27s
Build WASM (stable, -p cdk-js)	1m 7s
Build (stable, -p cdk --no-default-features --features wallet)	1m 5s
Build (stable, -p cdk --no-default-features --features mint)	26s
Build (stable, -p cdk-redb)	1m 13s
Build (stable, -p cdk-sqlite)	1m 49s
Build (stable, -p cdk-axum)	1m 7s
Build (stable, -p cdk-cln)	1m 11s
Build (stable, -p cdk-fake-wallet)	1m 2s
Build (stable, -p cdk-strike)	1m 16s
Build (stable, --bin cdk-cli)	2m 23s
Build (stable, --bin cdk-mintd)	2m 53s
Build (stable, --examples)	1m 33s
	19m 56s

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