Add Retry ability for Failed Tasks

[Badgerati]

Describe the Change

Adding a retry ability for Failed Tasks would help with tasks that do have legitimate intermittent failures, and by simply retrying the Task it succeeds - such as web scraping, etc.

• Add a -KeepFailed switch to Add-PodeTask, which will prevent the housekeeper from closing failed Task processes.
• A new Restart-PodeTaskProcess could be added, which will allow the retrying of failed Task processes - this will restart a Task Process by ID, retrieved via Get-PodeTaskProcess or from the object returned via Invoke-PodeTask
• Add a -MaxRetryCount parameter on Add-PodeTask - if the Task process is retries X times then it's closed
• Add an -AutoRetryFailed switch to Add-PodeTask, to automatically retry failed Task processes