initial commit alloca

include/alloca.h

+#ifndef _ALLOCA_H
+#define _ALLOCA_H
+
+#include <alloca.h>
+
+void *alloca(size_t size);
+
+#endif
\ No newline at end of file

src/header/alloca/cbindgen.toml

+sys_includes = []
+include_guard = "_ALLOCA_H"
+language = "C"
+style = "Tag"
+
+[enum]
+prefix_with_name = true

src/header/alloca/mod.rs

+use platform::types::*;
+