Support conditional in Binary Light

I have numerous ESPHome devices installed. In all of them, I include a Template Select to allow the Binary Sensor (physical switch) to be enabled/disabled. This is super useful to prevent the kids from playing around with the physical switches in their rooms.

```
binary_sensor:
- platform: gpio
id: sw
internal: true
pin:
number: GPIO5
on_press:
- if:
condition: # only toggle relay if button is enabled
lambda: 'return (id(select_switch).state == "Enabled");'
then:
light.toggle: roomlight

select:
# option to disable switch
- platform: template
name: "${device_upper} Enable/Disable"
id: select_switch
optimistic: true
options:
- Enabled
- Disabled
initial_option: Enabled
restore_value: true
icon: mdi:circle-double
```

What cannot be disabled this way, however, are the controls in HomeAssistant. Because the Binary Light (that triggers a GPIO Output) doesn't support a conditional I cannot disable the controls.

It'd be great if this was possible in a similar way as for the Binary Sensor above.

Review the Binary Light and GPIO Output configuration described in the issue, then compare it with the Binary Sensor `if` condition and Template Select example. Determine how a conditional should affect the Home Assistant controls; done means a Binary Light can be conditionally enabled or disabled in the same practical way as the shown Binary Sensor.

Written by the indexing model from the issue text.