Introduce new `bdk_coin_select` implementation #4202

Job	Run time
Build and test (stable, true, --no-default-features)	3m 41s
Build and test (stable, true, --all-features)	4m 24s
Check no_std	1m 1s
Build and test (1.57.0, --no-default-features)	4m 22s
Check WASM	2m 5s
clippy_check	6m 38s
Build and test (1.57.0, --all-features)	4m 4s
Rust fmt	5s
	26m 20s

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