create empty class to init if packages are not properly installed to avoid...

create empty class to init if packages are not properly installed to avoid first error message on install

__init__.py

@@ -7,7 +7,12 @@ def classFactory(iface):
     from .dialogs.check_gpu import has_gpu
     from .dialogs.packages_installer import packages_installer_dialog
     device = has_gpu()
-    packages_installer_dialog.check_required_packages_and_install_if_necessary(iface=iface, device=device)
+    packages_installed_allready = packages_installer_dialog.check_required_packages_and_install_if_necessary(iface=iface, device=device)
     # packages_installer_dialog.check_required_packages_and_install_if_necessary(iface=iface)
-    from .iamap import IAMap
-    return IAMap(iface, cmd_folder)
+    if packages_installed_allready:
+        from .iamap import IAMap
+        return IAMap(iface, cmd_folder)
+
+    else:
+        from .dialogs.packages_installer.packages_installer_dialog import IAMapEmpty
+        return IAMapEmpty(iface, cmd_folder)