[FEATURE] Support For AWS/AppFlow

[Arman-ali-khan-786]

Is there an existing issue for this?

• I have searched the existing issues

Feature description

support for AWS/AppFlow

Error Log:
"{ Discovery job [0]: Service is not in known list!: AWS/AppFlow”}"

What might the configuration look like?

- type: AWS/AppFlow
  regions:
    - us-west-1
  period: 300
  length: 300
  metrics:
    - name: FlowExecutionsFailed
      statistics: [Average, Sum, Maximum]

Anything else?

For Reference Doc Link : https://docs.aws.amazon.com/appflow/latest/userguide/monitoring-cloudwatch.html

[tristanburgess]

Community PR #1700 adds AppFlow namespace support and may address this issue.