refactor: move ics23_commitment to a new package (#113)

Resolves #105

This PR moves the `ics23_commitment` folder out as a separate package,
so that other projects can import it as dependency.

cc @gregdhill

Author: SebastianElvis

Cargo.toml

@@ -28,6 +28,7 @@ babylon-bitcoin = { path = "./packages/bitcoin" }
 babylon-btcstaking = { path = "./packages/btcstaking" }
 babylon-contract = { path = "./contracts/babylon" }
 eots = { path = "./packages/eots" }
+ics23-commitment = { path = "./packages/ics23_commitment" }
 anyhow = "1.0.82"
 bech32 = "0.9.1"
 bitcoin = "0.31.1"