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

The files were moved almost as-is, just dropping arg-t and auth-t from
acl-t but keeping arg-t in acl.h. It was useful to revisit the call places
since a handful of files used to continue to include acl.h while they did
not need it at all. Struct stream was only made a forward declaration
since not otherwise needed.
diff --git a/src/flt_spoe.c b/src/flt_spoe.c
index 1ffa4a7..7d36a8e 100644
--- a/src/flt_spoe.c
+++ b/src/flt_spoe.c
@@ -12,6 +12,7 @@
 #include <ctype.h>
 #include <errno.h>
 
+#include <haproxy/acl.h>
 #include <haproxy/action-t.h>
 #include <haproxy/api.h>
 #include <common/cfgparse.h>
@@ -31,7 +32,6 @@
 #include <haproxy/global.h>
 #include <types/spoe.h>
 
-#include <proto/acl.h>
 #include <haproxy/arg.h>
 #include <proto/backend.h>
 #include <proto/filters.h>