c: Add skeleton filesfor the CLI tool

This is prep work for the moving to Meson.

c/cli/src/passgeny.c

@@ -0,0 +1,8 @@
+#include <stdlib.h>
+
+#include "phogen.h"
+
+int main(void)
+{
+    return EXIT_SUCCESS;
+}

c/phogen/inc/phogen.h

@@ -0,0 +1,4 @@
+#ifndef PHOGEN_H_INCLUDED
+#define PHOGEN_H_INCLUDED
+
+#endif /* PHOGEN_H_INCLUDED */

c/phogen/src/phogen.c

@@ -0,0 +1,10 @@
+#include <stdlib.h>
+
+/*
+ * Phonetic generator -- used to convert binary data to semi-pronouncable
+ * strings
+ */
+
+#include "phogen_map.h"
+#include "phogen.h"
+