feat(azuread_application): add public_client

[sschne]

Issue-id

PR Checklist

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• [x] I have added example(s) inside the [./examples/] folder
• [x] I have added the example(s) to the integration test list for normal (~30 minutes) or long runner >30 minutes
• [x] I have checked the coding conventions as per the wiki
• [x] I have checked to ensure there aren't other open Pull Requests for the same update/change?

Description

Does this introduce a breaking change

• [x] YES
• [ ] NO

in azuread.application, the public_client setting was used by the fallback_public_client_enabled parameter of the azuread_application resource. This was renamed to fallback_public_client_enabled to be able to use the public_client parameter with the setting of the same name

Testing