Added an include instruction to unordered_map in guiutilsns.cpp to build

correctly on macOs

Author: rkhaotix

apps/pgmodeler/res/Info.plist

@@ -33,7 +33,7 @@
        <key>CFBundleSignature</key>
        <string>????</string>
        <key>CFBundleVersion</key>
-       <string>0.9.4</string>
+			 <string>1.2.0</string>
        <key>CSResourcesFileMapped</key>
        <true/>
        <key>NSPrincipalClass</key>

libs/libgui/src/guiutilsns.cpp

@@ -28,6 +28,7 @@
 #include "generalconfigwidget.h"
 #include "objectslistmodel.h"
 #include "customsortproxymodel.h"
+#include <unordered_map>
 
 namespace GuiUtilsNs {