Update 「messagegenerator.py」 for Teams Notifications Using Power Automate Endpoint

[HIROTOSHI1002]

With the deprecation of incoming webhooks for Microsoft Teams, it is necessary to update messagegenerator.py to enable Teams notifications via Power Automate. The modification should allow the script to send notifications to a Power Automate workflow endpoint, which will handle the routing to Teams channels. This change ensures continuity in notification delivery and leverages the capabilities of Power Automate to enhance Teams notifications.

[omahonyb]

I actually went and got this working earlier today and tested using orgs. Ill put the code in a PR in a short bit.

Just be ware when you create the workflow using Teams, the default setup doesnt work. It needs to be put together like this:

[omahonyb]

Submitted, although the card is pretty big in the teams window so I am looking at making soem way to "expand for more".

[omahonyb]

Tidied it up with an accordian view on the ARN and Description