add new fuzzer for compile method

fuzz/fuzz_targets/compile_wasm.rs

@@ -0,0 +1,10 @@
+#![no_main]
+#[macro_use]
+extern crate libfuzzer_sys;
+extern crate wasmer_runtime;
+
+use wasmer_runtime::compile;
+
+fuzz_target!(|data: &[u8]| {
+    let _ = compile(data);
+});