test: add fuzzer

Signed-off-by: Chojan Shang <psiace@outlook.com>

fuzz/fuzz_targets/fuzz_parse_sql.rs

@@ -0,0 +1,12 @@
+use honggfuzz::fuzz;
+use sqlparser::dialect::GenericDialect;
+use sqlparser::parser::Parser;
+
+fn main() {
+    loop {
+        fuzz!(|data: String| {
+            let dialect = GenericDialect {};
+            let _ = Parser::parse_sql(&dialect, &data);
+        });
+    }
+}