Add SSID and PSK config items

main/Kconfig.projbuild

@@ -1,6 +1,11 @@
 menu "Bedside clock settings"
      config DEFAULT_HOSTNAME
-            string "The default hostname for the device"
+            string "Default hostname"
             default "bedside-clock"
-            prompt "Default hostname"
+     config DEFAULT_SSID
+            string "SSID of default WiFi network"
+            default ""
+     config DEFAULT_PSK
+            string "PSK for default WiFi network"
+            default ""
 endmenu