feat: Add enterprise billing usage endpoints and response types

[maishivamhoo123]

Summary

Adds support for the GitHub Enterprise billing usage API endpoints.
#4262

New methods on BillingService

GetEnterpriseUsageReport
GetEnterpriseUsageSummary
GetEnterprisePremiumRequestUsageReport
GetEnterpriseAICreditUsage

And added test for all the new End points .

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.47%. Comparing base (34dd998) to head (450899d).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4288   +/-   ##
=======================================
  Coverage   97.46%   97.47%           
=======================================
  Files         192      193    +1     
  Lines       19258    19310   +52     
=======================================
+ Hits        18770    18822   +52     
  Misses        270      270           
  Partials      218      218           

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[maishivamhoo123]

@alexandear @gmlewis @Not-Dhananjay-Mishra i made all the changes can you please review it ?
Thank you.

[maishivamhoo123]

@gmlewis @alexandear @Not-Dhananjay-Mishra All tests and lint checks are passing in my local setup.

However, I'm not sure why the CI is failing here. Could you please guide me on how to debug this issue and identify the root cause? I'd also appreciate any suggestions on how to fix the linting error.
Thank you!

[alexandear]

However, I'm not sure why the CI is failing here. Could you please guide me on how to debug this issue and identify the root cause? I'd also appreciate any suggestions on how to fix the linting error. Thank you!

Don't worry; it's a GitHub problem. @gmlewis will retry the workflow run.

[gmlewis]

Thank you, @maishivamhoo123!

The new endpoints are missing tests that make calls to testBadOptions and testNewRequestAndDoFailure. For example:

const methodName = "ListSelectedReposForOrgSecret"
testBadOptions(t, methodName, func() (err error) {
        _, _, err = client.Dependabot.ListSelectedReposForOrgSecret(ctx, "\n", "\n", opts)
        return err
})

testNewRequestAndDoFailure(t, methodName, client, func() (*Response, error) {
        got, resp, err := client.Dependabot.ListSelectedReposForOrgSecret(ctx, "o", "NAME", opts)
        if got != nil {
                t.Errorf("testNewRequestAndDoFailure %v = %#v, want nil", methodName, got)
        }
        return resp, err

        })
})

There are many examples in this repo. Please add similar tests to fix code coverage.

[maishivamhoo123]

@alexandear and @gmlewis i made all the recommended changes can you please review this .
Thank you!

[gmlewis]

Thank you, @maishivamhoo123!
LGTM.
Awaiting LGTM+Approval from other reviewers before merging:

cc: @alexandear - @Not-Dhananjay-Mishra

[maishivamhoo123]

@alexandear Thank you for your review .
I made all the suggested changes can you please take a another look .
Thank you !