Emerge Yul recompiler (#1)

Provide a modified (and incomplete) version of ZKSync zksolc that can compile the most basic contracts

crates/solidity/src/yul/lexer/error.rs

@@ -0,0 +1,20 @@
+//!
+//! The Yul IR lexer error.
+//!
+
+use crate::yul::lexer::token::location::Location;
+
+///
+/// The Yul IR lexer error.
+///
+#[derive(Debug, thiserror::Error, PartialEq, Eq)]
+pub enum Error {
+    /// The invalid lexeme error.
+    #[error("{location} Invalid character sequence `{sequence}`")]
+    InvalidLexeme {
+        /// The lexeme location.
+        location: Location,
+        /// The invalid sequence of characters.
+        sequence: String,
+    },
+}