feature: log level on kprintf (color)

fix: kprintf now uses concatenated strings for the flag

headers/kprintf.h

@@ -2,18 +2,15 @@
 
 #include <stdarg.h>
 
-enum print_level {
-	KERN_EMERG,
-	KERN_ALERT,
-	KERN_CRIT,
-	KERN_ERR,
-	KERN_WARNING,
-	KERN_NOTICE,
-	KERN_INFO,
-	KERN_DEBUG,
-	KERN_DEFAULT,
-	KERN_CONT
-};
+#define KERN_EMERG   "0"
+#define KERN_ALERT   "1"
+#define KERN_CRIT    "2"
+#define KERN_ERR     "3"
+#define KERN_WARNING "4"
+#define KERN_NOTICE  "5"
+#define KERN_INFO    "6"
+#define KERN_DEBUG   "7"
+#define KERN_DEFAULT "8"
 
-int kprintf(int level, const char *restrict format, ...);
-int kvprintf(int level, const char *restrict format, va_list ap);
+int kprintf(const char *restrict format, ...);
+int kvprintf(const char *restrict format, va_list ap);