feat: panic, printf, logo and something i dont remember

kernel/include/console.h

@@ -6,6 +6,8 @@
 void console_init(SG_Context *ctx);
 void console_clear(u32 color);
 void console_set_color(u32 color);
+void console_set_cursor_pos(SG_Point *p);
 void kprint(const char *str);
+void kprintf(const char *fmt, ...);
 
 #endif

kernel/include/math.h

@@ -0,0 +1,9 @@
+#include "types.h"
+
+static inline int abs(int n) {
+    return (n < 0) ? -n : n;
+}
+
+static inline i64 i64abs(i64 n) {
+    return (n < 0) ? -n : n;
+}

kernel/include/panic.h

@@ -0,0 +1,3 @@
+#pragma once
+
+__attribute__((noreturn)) void panic(const char *msg);