Initial commit. We have a booting kernel

libc/stdio/printf.c

@@ -0,0 +1,9 @@
+#include <stdio.h>
+
+int printf(const char* restrict fmt, ...)
+{
+	int len = 0;
+	while (fmt[len])
+		putchar(fmt[len++]);
+	return len;
+}

libc/stdio/putchar.c

@@ -0,0 +1,15 @@
+#include <stdio.h>
+
+#if defined(__is_libk)
+#include <kernel/tty.h>
+#endif
+
+int putchar(int c)
+{
+#if defined(__is_libk)
+	char ch = (char)c;
+	terminal_write(&ch, sizeof(ch));
+#else
+#endif
+	return c;
+}

libc/stdio/puts.c

@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+int puts(const char* str)
+{
+	return printf("%s\n", str);
+}