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

The file was split into two since it contains a variable declaration.
diff --git a/src/http_act.c b/src/http_act.c
index 9355fa0..51bb1a3 100644
--- a/src/http_act.c
+++ b/src/http_act.c
@@ -28,7 +28,7 @@
 #include <common/uri_auth.h>
 #include <haproxy/version.h>
 
-#include <types/capture.h>
+#include <haproxy/capture-t.h>
 #include <types/global.h>
 
 #include <proto/acl.h>