Fire HASS events on SimpliSafe events

[bachya]

Proposed change

Now that HASS can listen (and respond) to events from the SimpliSafe websocket, this PR fires a corresponding HASS event when a SimpliSafe event is received. Tactically, this means users can trigger automations by listening to various SIMPLISAFE_EVENT events – for example, to create a persistent notification from any event:

automation:
  - alias: "Notify on SimpliSafe events"
    trigger:
      platform: event
      event_type: SIMPLISAFE_EVENT
    action:
      service: persistent_notification.create
      data_template:
        title: New SimpliSafe Event
        message: "{{ trigger.event.data }}"

Each event provides a payload that looks like this:

{
    "changed_by": "",
    "event_type": "armed_home",
    "info": "System Armed (Home) by Remote Management",
    "sensor_name": "",
    "sensor_serial": "",
    "sensor_type": "remote",
    "system_id": 323864,
    "timestamp": datetime.datetime(2020, 2, 13, 23, 1, 13, tzinfo=<UTC>),
}

...and event_type can be one of:

• camera_motion_detected
• doorbell_detected
• entry_detected
• motion_detected
• sensor_not_responding
• sensor_restored

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Example entry for configuration.yaml:

# Example configuration.yaml
simplisafe:
  accounts:
    - username: !secret simplisafe_username
      password: !secret simplisafe_password

Additional information

• This PR fixes or closes issue: N/A
• This PR is related to issue: N/A
• Link to documentation pull request: Add documentation for SimpliSafe events home-assistant.io#12081

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist
• The code has been formatted using Black (black --fast homeassistant tests)
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• The manifest file has all fields filled out correctly.
  Updated and included derived files by running: python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.
• Untested files have been added to .coveragerc.

The integration reached or maintains the following Integration Quality Scale:

• No score or internal
• 🥈 Silver
• 🥇 Gold
• 🏆 Platinum

[codecov]

Codecov Report

Merging #31811 into dev will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##              dev   #31811      +/-   ##
==========================================
- Coverage   94.68%   94.66%   -0.02%     
==========================================
  Files         763      763              
  Lines       55148    55160      +12     
==========================================
+ Hits        52215    52216       +1     
- Misses       2933     2944      +11

Impacted Files	Coverage Δ
...meassistant/components/homematicip_cloud/switch.py	93.4% <0%> (-6.6%)	⬇️
...eassistant/components/homematicip_cloud/climate.py	98.29% <0%> (-1.71%)	⬇️
...omponents/homematicip_cloud/alarm_control_panel.py	98.52% <0%> (-1.48%)	⬇️
...omeassistant/components/homematicip_cloud/cover.py	97.36% <0%> (-1.32%)	⬇️
homeassistant/components/ipma/config_flow.py	100% <0%> (ø)	⬆️
homeassistant/components/ipma/weather.py	85.43% <0%> (+1.06%)	⬆️

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