API Support for Conditional Access Policy

[liammoat]

This PR will add API support for conditionalAccessPolicy on the Microsoft Graph.

[liammoat]

@manicminer, this is a draft PR to add API support for conditionalAccessPolicy. I'd like to add some tests for the ConditionalAccessPolicyClient. Can you advise if you have a specific tenant that the tests need to run against?

[manicminer]

Hi @liammoat, thanks for this PR, this looks great!

For configuring tests, there is a helper at https://github.com/manicminer/hamilton/blob/main/clients/internal/testing.go which reads the auth configuration from environment variables, so it's up to the user to supply a tenant ID (in this case, for a P1 or P2 tenant) and client credentials.

If you can add some tests, I'll take another look and we can look to get this merged :)

[manicminer]

@liammoat Thanks for adding the tests. This mostly LGTM, I have a question about the enterprise application used for testing, and I replied to your query on the readonly field issue.

Sorry for the inconvenience but I've done some refactoring that affects your PR - the clients and models packages are now a single package msgraph, with the models together alphabetically in models.go.

I also had to merge the same golangci-lint fix to the GH action so you'll probably need to revert that file.

If you can take a look at the above this should be good to merge. Thanks again!

[manicminer]

Thanks for the changes @liammoat, this LGTM!