Add test-basic-boot and test-panic integration tests

src/bin/test-panic.rs

@@ -0,0 +1,23 @@
+#![cfg_attr(not(test), no_std)]
+#![cfg_attr(not(test), no_main)]
+#![cfg_attr(test, allow(unused_imports))]
+
+use blog_os::{exit_qemu, serial_println};
+use core::panic::PanicInfo;
+
+#[cfg(not(test))]
+#[no_mangle]
+pub extern "C" fn _start() -> ! {
+    panic!();
+}
+
+#[cfg(not(test))]
+#[panic_handler]
+fn panic(_info: &PanicInfo) -> ! {
+    serial_println!("ok");
+
+    unsafe {
+        exit_qemu();
+    }
+    loop {}
+}