feat: added 'NewPutQueryRequest' to support the 'integrations' endpoint

[jgangemi]

Resolves #2040

I refactored the code ever so slightly to not duplicate building the url or setting the headers on the request. I also didn't want to modify the existing NewRequest method signature and cause a cascade of changes elsewhere, so i just added a new method.

Includes a test.

[svanharmelen]

Cross posting this update so all info is here as well: I thought to remember something about the API actually accepting both query strings and payload body and I found the docs mentioning this: https://docs.gitlab.com/ee/api/rest/#request-payload

If you read closely, you also notice that they write that usually only GET requests use query strings and POST and PUT requests use payload body (quite the default with REST). So that matches exactly with what this package does and so I don't know how you came to the conclusion that this needed to be a call that specifically needs to use query params, but I think your assumption might be incorrect...

[jgangemi]

you're right - i'm not sure why this wasn't working originally but it mostly works now w/ #2042, which is still missing a few fields but i'll post there.