feat(wallet): add functions to lock and unlock utxos #6236

Job	Run time
Build and test (stable, true, --no-default-features --features miniscript/no-std)	2m 0s
Build & Test Examples (example_cli)	29s
Build and test (stable, true, --all-features)	3m 47s
Check no_std	34s
Build & Test Examples (example_bitcoind_rpc_polling)	35s
Check WASM	57s
Build and test (1.63.0, --no-default-features --features miniscript/no-std)	3m 35s
Build & Test Examples (example_electrum)	53s
Build and test (1.63.0, --all-features)	5m 36s
Build & Test Examples (example_esplora)	1m 6s
Rust fmt	14s
Build & Test Examples (example_wallet_electrum)	54s
prepare	3s
Build & Test Examples (example_wallet_esplora_async)	54s
Build & Test Examples (example_wallet_esplora_blocking)	52s
Build & Test Examples (example_wallet_rpc)	42s
clippy_check	44s
	23m 55s

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