Add better serial logging

src/kernel.c

@@ -13,7 +13,8 @@
 void kernel_main(void) {
     init_serial();
     if (!test_serial()) {
+        serial_log(S_ERR, "Failed to init serial!");
         return;
     }
-    send_serials("Init serial succesfully.");
+    serial_log(S_LOG, "Init serial succesfully.");
 }

src/serial.h

@@ -28,6 +28,26 @@ static inline void send_serials(const char *str) {
     }
 }
 
+typedef enum {
+    S_LOG,
+    S_ERR,
+} serial_print_type;
+
+static inline void serial_log(serial_print_type type, const char *str) {
+    switch (type) {
+    case S_LOG: {
+        send_serials("\033[32m"); // green
+        break;
+    }
+    case S_ERR: {
+        send_serials("\033[31m"); // red
+        break;
+    }
+    }
+    send_serials(str);
+    send_serials("\033[0m\n");
+}
+
 static inline bool test_serial() {
     bool to_return = true;
     outb(COM1 + 4, 0x10);