Add a 50ms delay after switching relays, so we avoid RF spikes from inductive loads triggering capacitive touch sensors

src/channel.c

@@ -155,6 +155,9 @@ void channel_set(int idx, bool state) {
   s_channels[idx].relay_state        = state;
   if (s_channels[idx].relay_gpio != GPIO_INVALID) {
     mgos_gpio_write(s_channels[idx].relay_gpio, state);
+    // We sleep for 50ms because inductive loads cause an RF spike which trips
+    // capacitive sensors
+    mgos_msleep(50);
   }
   if (s_channels[idx].led_gpio != GPIO_INVALID) {
     mgos_gpio_write(s_channels[idx].led_gpio, state);