Add fuzzing

Signed-off-by: Marcel Müller <neikos@neikos.email>

fuzz/fuzz_targets/fuzz_target_1.rs

@@ -0,0 +1,18 @@
+#![no_main]
+
+use libfuzzer_sys::Corpus;
+use libfuzzer_sys::fuzz_target;
+
+fuzz_target!(|data: String| -> Corpus {
+    let Ok(parsed) = nomo::parser::parse(data.into()) else {
+        return Corpus::Reject;
+    };
+
+    let Ok(ast) = nomo::ast::parse(parsed.tokens()) else {
+        return Corpus::Keep;
+    };
+
+    let _instructions = nomo::emit::emit_machine(ast);
+
+    Corpus::Keep
+});