Konnected component feature updates

[heythisisnate]

Description:

1. Adds an inverse config option for a konnected binary sensor that inverts the open/close state. By default a open circuit on a wired sensor means 1/on/high/open/true. This setting inverts it to mean 0/off/low/closed/false. This is commonly needed for Normally Open wired smoke detector integration.
2. Adds an endpoint for a Konnected device to get the initial state of a switch.

Pull request in home-assistant.github.io with documentation: home-assistant/home-assistant.io#6220

Example entry for configuration.yaml:

konnected:
  devices:
    - id: aaaaaaab5759
      binary_sensors:
        - name: Door
          zone: 1
          type: door
        - name: Smoke
          zone: 4
          type: smoke
          inverse: true

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox. Your PR cannot be merged unless tests pass

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

• Documentation added/updated in home-assistant.github.io