Support for missing `Task` state fields

[nibble-4bits]

Add support for missing Task state fields:

• Retry (added in Feature/retry catch #40)
• Catch (added in Feature/retry catch #40)
• TimeoutSeconds (added in Feature/task state timeout #73)
• TimeoutSecondsPath (added in Feature/task state timeout #73)
• HeartbeatSeconds
• HeartbeatSecondsPath