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/http_act.c b/src/http_act.c
index cba3c79..8bb9877 100644
--- a/src/http_act.c
+++ b/src/http_act.c
@@ -16,6 +16,7 @@
 #include <string.h>
 #include <time.h>
 
+#include <haproxy/action.h>
 #include <haproxy/api.h>
 #include <common/cfgparse.h>
 #include <haproxy/chunk.h>
@@ -32,7 +33,6 @@
 
 #include <proto/acl.h>
 #include <proto/arg.h>
-#include <proto/action.h>
 #include <proto/http_rules.h>
 #include <proto/log.h>
 #include <proto/http_ana.h>