revive-runner: add a utility binary for local contract execution (#284)

I had this in mind for a while but never implemented a standalone binary
so far because I always end up writing an integration test anyways.

However, using a standalone version of the pallet based on the
revive-runner crate is something people filing in bug reports do
anyways, for example:
https://github.com/paritytech/revive/issues/266
https://github.com/paritytech/contract-issues/issues/54
---------

Signed-off-by: Cyrill Leutwiler <bigcyrill@hotmail.com>

crates/runner/Cargo.toml

@@ -10,12 +10,19 @@ description = "Execute revive contracts in a simulated blockchain runtime"
 [package.metadata.cargo-machete]
 ignored = ["codec", "scale-info"]
 
+[[bin]]
+name = "revive-runner"
+path = "src/main.rs"
+
 [features]
 std = ["polkadot-sdk/std"]
 default = ["solidity"]
 solidity = ["revive-solidity", "revive-differential"]
 
 [dependencies]
+env_logger = { workspace = true }
+clap = { workspace = true }
+anyhow = { workspace = true }
 serde = { workspace = true }
 serde_json = { workspace = true }
 hex = { workspace = true, features = ["serde"] }