REORG: include: move action.h to haproxy/action{,-t}.h

List.h was missing for LIST_ADDQ(). A few unneeded includes of action.h
were removed from certain files.

This one still relies on applet.h and stick-table.h.
diff --git a/src/action.c b/src/action.c
index 17716b5..63c1188 100644
--- a/src/action.c
+++ b/src/action.c
@@ -10,12 +10,12 @@
  *
  */
 
+#include <haproxy/action.h>
 #include <haproxy/api.h>
 #include <haproxy/pool.h>
 #include <haproxy/list.h>
 #include <haproxy/tools.h>
 
-#include <proto/action.h>
 #include <proto/log.h>
 #include <proto/obj_type.h>
 #include <proto/proxy.h>