Add CompositeFormat StringSyntaxAttribute syntaxes

[blouflashdb]

Add CompositeFormat StringSyntaxAttribute syntaxes

• You've read the Contributor Guide and Code of Conduct.
• You've included unit or integration tests for your change, where applicable.
• You've included inline docs for your change, where applicable.
• There's an open issue for the PR that you are making. If you'd like to propose a new feature or change, please open an issue to discuss the change or find an existing issue.

Description

Closes CompositeFormat Task in #44535

[ghost]

Thanks for your PR, @blouflashdb. Someone from the team will get assigned to your PR shortly and we'll get it reviewed.