Introduce `O(n)` canonicalization algorithm #6317

Job	Run time
prepare	2s
Rust fmt	5s
Check WASM	1m 7s
Build & Test Examples (example_cli)	22s
Build and test (stable, true, --no-default-features --features miniscript/no-std)	2m 18s
Build & Test Examples (example_bitcoind_rpc_polling)	59s
Check no_std	30s
Build and test (stable, true, --all-features)	4m 1s
Build & Test Examples (example_electrum)	55s
Build and test (1.63.0, --no-default-features --features miniscript/no-std)	3m 50s
Build & Test Examples (example_esplora)	55s
Build and test (1.63.0, --all-features)	5m 59s
Build & Test Examples (example_wallet_electrum)	53s
Build & Test Examples (example_wallet_esplora_async)	1m 5s
Build & Test Examples (example_wallet_esplora_blocking)	56s
Build & Test Examples (example_wallet_rpc)	28s
clippy_check	1m 8s
	25m 33s

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