device-ui: add channel filter, add slovenian

meshtastic/device_ui.options

@@ -4,4 +4,5 @@
 *DeviceUIConfig.calibration_data max_size:16
 *NodeFilter.node_name max_size:16
 *NodeFilter.hops_away int_size:8
+*NodeFilter.channel int_size:8
 *NodeHighlight.node_name max_size:16

meshtastic/device_ui.proto

@@ -100,6 +100,11 @@ message NodeFilter {
    */
   string node_name = 6;
    
+  /*
+   * Filter based on channel
+   */
+  int32 channel = 7;
+   
 }
 
 message NodeHighlight {
@@ -224,6 +229,11 @@ enum Language {
    */
   NORWEGIAN = 14;
 
+  /*
+   * Slovenian
+   */
+  SLOVENIAN = 15;
+
    /*
    * Simplified Chinese (experimental)
    */