meta: move photon/libc to root

libc/stdlib/assert.c

@@ -0,0 +1,8 @@
+#include <stdlib.h>
+#include <stdio.h>
+
+extern void _Noreturn __assert_fail(const char *exp, const char *func, const char *file, int line)
+{
+    printf("Assertion failed: (%s), function %s, file %s, line %d\n", exp, func, file, line);
+    abort();
+}