resumable uploads with GCS

[mitjap]

My solution is to write to temporary file on subsequent writes and combine with original file. Temporary file is discarded immediately after write.

I added test for this behavior and improved some other test. Many tests did not remove files after.

Resolves #37

[Acconut]

Wow, thank you very much for this and your other PRs! We really appreciate the work you have put into these and into tus-node-server as a whole. Sadly, tus-node-server is currently and has been unmaintained for quite some time, after its original author stepped down. I also didn't have the time and experience to keep tus-node-server updated on my own, so I also lack the knowledge to proper review your PR and provide the feedback it deserves.

Therefore, I would like to make you a little offer and invite you as a collaborator to tus-node-server. If you are interested you can develop the PRs of yours directly in the tus-node-server repository and give it some attention without the overhead of opening PRs and waiting for them to be merged. We would really like to see tus-node-server be in better shape since many people find it incredibly useful. And hopefully, you share the same vision! Of course, I will always be available for comments and questions, even though my knowledge of this code base is rather limited.

Let me know what you think of this :)

[mitjap]

Thank you for you offer. I've accepted an invitation for collaboration. What is best channel for you to discuss future plans for this project?

[mitjap]

@Acconut I can't merge this PR because not all checks are completed. Look like something is wrong with coverage/coveralls as it is pending for days or event longer in other PRs. For same reason I can not push directly to master branch. Is there anything you can do to resolve this?

[Acconut]

Thank you for you offer. I've accepted an invitation for collaboration.

Awesome, that is great to hear! Looking forward to working together :)

What is best channel for you to discuss future plans for this project?

If we are talking about bigger decisions for tus-node-server, it would make sense to discuss them in the open on GitHub. Otherwise, for smaller questions about tus, I can invite you to our Slack channel. Just send me your email at marius@transloadit.com.

I can't merge this PR because not all checks are completed. Is there anything you can do to resolve this?

Yes, I removed the protection that PRs must have all checks passing before they can be merged. Let me know if that works now for you or you need further help.