State machine Alarm does not support custom period

[nbcchen]

This is a (Bug Report / Feature Proposal)

Feature Proposal

Description

For feature proposals:

• What is the use case that should be solved. The more detail you describe this in the easier it is to understand for us.
  Alarm does not support period. Adding period removes the alarm. Is it possible to add support for custom period config?
• If there is additional config how would it look

  metrics:
    - executionsFailed
  treatMissingData: ignore
  period: 36000 # here

Additional Data

• Serverless Framework Core Version you're using: 3.38.0
• The Plugin Version you're using: 1.7.5
• Operating System: Windows
• Stack Trace:
• Provider Error messages: