fix(omemo): add missing includes for libomemo-c builds

Signed-off-by: Leon Adomaitis <leon@adomaitis.de>

src/omemo/store.c

@@ -7,6 +7,7 @@
  * SPDX-License-Identifier: GPL-3.0-or-later WITH OpenSSL-exception
  */
 #include <glib.h>
+#include "config.h"
 
 #ifdef HAVE_LIBOMEMO_C
 #include <omemo/signal_protocol.h>
@@ -14,7 +15,6 @@
 #include <signal/signal_protocol.h>
 #endif
 
-#include "config.h"
 #include "log.h"
 #include "omemo/omemo.h"
 #include "omemo/store.h"