resolc crate (#328)

- Factor the YUL crate out of `revive-solidity`.
- `revive-solidity` is in reality not a Solidity implementation but the
revive solidity compiler driver (`resolc`). By renaming we not only get
this straight but also a binary with the same name as the crate which
should be less confusing.

---------

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

crates/resolc/src/tests/runtime_code.rs

@@ -0,0 +1,33 @@
+//! The Solidity compiler unit tests for runtime code.
+
+#![cfg(test)]
+
+use std::collections::BTreeMap;
+
+#[test]
+#[should_panic(expected = "runtimeCode is not supported")]
+fn default() {
+    let source_code = r#"
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+contract A {}
+
+contract Test {
+    function main() public pure returns(bytes memory) {
+        return type(A).runtimeCode;
+    }
+}
+    "#;
+
+    let mut sources = BTreeMap::new();
+    sources.insert("test.sol".to_owned(), source_code.to_owned());
+
+    super::build_solidity(
+        sources,
+        BTreeMap::new(),
+        None,
+        revive_llvm_context::OptimizerSettings::cycles(),
+    )
+    .expect("Test failure");
+}