fix known issues, add other token types support

[HosseinAgha]

This resolves #21, resolves #22, resolves #24, and resolves #25.

The issue with the comment command was that the checking for the previous comment was not strict enough and it was trying to update a system note (by the MR owner). So if I pushed to the MR a system note would be generated and changesets-gitlab would accidentally try to updated that comment.

I've also added a prepack script so future contributors can use the raw Github repository as a dependency.

I've also added a new option to provide CIJob or OAuth token (gitbeaker actually supports this), although looks like ci-job-token access is very limited so only oauth token is usable until this Gitlab MR merges.

[changeset-bot]

🦋 Changeset detected

Latest commit: 32d974b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
changesets-gitlab	Minor

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[HosseinAgha]

@JounQin
This is a major bug in the package's functionality.
Could you please merge it?

[JounQin]

Sorry, I didn’t notice this PR before, I’ll check ASAP.

[JounQin]

I've also added a prepack script so future contributors can use the raw Github repository as a dependency.

I'm not sure how it's working and why we should support installing git repo.

[JounQin]

@HosseinAgha Thanks for your effort first, I have a few questions above, maybe it can be separated into a few PRs instead for discussion.

For example, fixing the missing dependencies seems very correct to me.

[HosseinAgha]

I've also added a prepack script so future contributors can use the raw Github repository as a dependency.

I'm not sure how it's working and why we should support installing git repo.

It is just a convenience for future contributors so they can directly install their PR branch in their projects and test their changes.
After adding this I can add my branch as a package like the following:

{
  "changesets-gitlab": "github:HosseinAgha/changesets-gitlab#head=fix-21-22"
}

yarn (and npm) will run the prepack script after cloning my version of changesets-gitlab so I can use the built version of the package.

[JounQin]

@HosseinAgha We have codesanbox support, see https://ci.codesandbox.io/status/rx-ts/changesets-gitlab/pr/23/builds/190422 for details.

[JounQin]

Please address my nitpicky comments.

[HosseinAgha]

Thanks @JounQin ❤️