Add support for skipping chores

Describe the bug As of grocy v3.2.0, skipping chores is possible, but this feature is not yet supported by the integration.

Expected behavior Calling the execute_chore service with skipped set to true should postpone the chore execution to the next scheduled date, without logging it as 'Done'. API available here.

service: grocy.execute_chore
data:
  chore_id: '0'
  done_by: '0'
  skipped: true

To Reproduce Steps to reproduce the behavior:

Go to Home Assistant developer tools - services.
Select Grocy: Execute Chore service
Add skipped: true to data in YAML mode
Observe an 'extra keys not allowed' error.

General information to help debugging:

What sensors do you have enabled? Are they working and/or what state are they in? Do you have the corresponding functions enabled in Grocy? sensor.grocy_chores binary_sensor.grocy_overdue_chores Chores activated in grocy

What is your installed versions of Home Assistant, Grocy and this integration? Grocy: 3.3.0 Home Assistant Core: 2022.5.0 Grocy inegration: v4.3.3

How do you have Grocy installed? Add-on or external? External via docker

Have you added debugging to the log, and what does the log say? N/A

JSON service data (if related to using a service)

{
  "tracked_time": "2022-06-02T12:15:37.917Z",
  "chore_id": 0,
  "done_by": 0,
  "skipped": true
}

custom-components / grocy

Add support for skipping chores #224

General information to help debugging: