Add event key to discovery message for Push Button events

[fvanroie]

Version of the custom_component

0.7.3

Issue

When a GPIO is configured as an input Push Button, then the messages do not correspond to HA boolean values.
To handle these messages a new "events" key is added to the discovery message to map these GPIOs to HA events.

Note: This only applies to Push Buttons. Other sensors and Switch inputs do send the normal 'on'/'off' payloads and work as expected.

The events send by a Push Button GPIO are:

• down : Occurs when a button goes from depressed to pressed (the moment of touch)
• up : The button was released within a short time i.e. a short press has occurred
• release : The button is released after being pressed for over the threshold time
• long : Event is sent when the button is still being pressed after the threshold time of 400ms
• hold : The HOLD event is repeated every 200ms while the button is still pressed

Discovery Message

{
  "node": "plate01",
  "mdl": "FreeTouchDeck",
  "mf": "openHASP",
  "hwid": "7c87cee34b7c",
  "pages": 12,
  "sw": "0.7.0-rc12",
  "node_t": "hasp/plate01/",
  "uri": "http://191.168.0.133",
  "input": {},
  "power": [],
  "light": [],
  "dim": [],
  "event": [
    0
  ]
}

A new event key lists the GPIO ids of the Push Button inputs.

Debug log

Currently these events result in an error message in HA log:

2024-07-23 21:13:01.659 ERROR (MainThread) [custom_components.openhasp.binary_sensor] extra keys not allowed @ data['event']
2024-07-23 21:13:03.487 ERROR (MainThread) [custom_components.openhasp.binary_sensor] extra keys not allowed @ data['event']
2024-07-23 21:13:03.889 ERROR (MainThread) [custom_components.openhasp.binary_sensor] extra keys not allowed @ data['event']
2024-07-23 21:13:05.144 ERROR (MainThread) [custom_components.openhasp.binary_sensor] extra keys not allowed @ data['event']