added:

* file: small wrap over winapi for windows and stdio for posix
 * fs: small wrapper over stat
 * slice: slice macro type
modified:
 * str and strview are now slices

slice.h

@@ -0,0 +1,5 @@
+#pragma once
+
+#include <stddef.h> // size_t
+
+#define slice_t(type) struct { type buf; size_t len; }