Setup fuzzing

[tjysdsg]

Use fuzzing to test the compiler

The compiler main function should only return 0 (successful compilation) or 1 (errors found in source code). By feeding random data to the compiler, we should find and fix bugs that causes it to crash, throw, or return unexpected value.

[tjysdsg]

Also, error messages printed by the compiler should be manually checked to ensure the correctness and clarity of error reporting.