move x86_64 bin test

src/main.rs

@@ -8,7 +8,7 @@ mod parser;
 mod parser_ir;
 
 fn main() {
-    return crate::backend::test_x86_64();
+    return crate::arch::x86_64::bin_test();
     let mut args = std::env::args();
     let Some(path) = args.nth(1) else {
         println!("file expected");