feat: add rebroadcastMode config

app/src/main/java/com/geeksville/mesh/ui/DeviceSettingsItemList.kt

@@ -177,6 +177,17 @@ fun DeviceSettingsItemList(viewModel: UIViewModel) {
                 })
         }
 
+        item {
+            DropDownPreference(title = "Rebroadcast mode",
+                enabled = connected,
+                items = ConfigProtos.Config.DeviceConfig.RebroadcastMode.values()
+                    .filter { it != ConfigProtos.Config.DeviceConfig.RebroadcastMode.UNRECOGNIZED }
+                    .map { it to it.name },
+                selectedItem = deviceInput.rebroadcastMode,
+                onItemSelected = { deviceInput = deviceInput.copy { rebroadcastMode = it } })
+        }
+        item { Divider() }
+
         item {
             PreferenceFooter(
                 enabled = deviceInput != localConfig.device,