Add a workflow to validate public API surface changes

[Ndiritu]

Leverage the kiota-dom-export-diff-tool to check for breaking changes in our weekly generation as a PoC before adding to other languages.

For reference:

• https://github.com/microsoftgraph/msgraph-sdk-dotnet/pull/2626
• https://github.com/microsoftgraph/msgraph-sdk-java/pull/2141