REORG: include: move freq_ctr to haproxy/

types/freq_ctr.h was moved to haproxy/freq_ctr-t.h and proto/freq_ctr.h
was moved to haproxy/freq_ctr.h. Files were updated accordingly, no other
change was applied.
diff --git a/include/types/global.h b/include/types/global.h
index b0beeb1..a00712c 100644
--- a/include/types/global.h
+++ b/include/types/global.h
@@ -27,7 +27,7 @@
 #include <haproxy/api-t.h>
 #include <haproxy/thread.h>
 
-#include <types/freq_ctr.h>
+#include <haproxy/freq_ctr-t.h>
 #include <types/listener.h>
 #include <types/proxy.h>
 #include <types/task.h>