Add Google Cloud Storage publisher

Preflight Checklist

• I have read the contribution documentation for this project.
• I agree to follow the code of conduct that this project follows, as appropriate.
• I have searched the issue tracker for a feature request that matches the one I want to file, without success.

Problem Description

It is impossible to use @electron-forge/publisher-s3 with Google Cloud Storage. Documentation: https://cloud.google.com/storage/docs/interoperability

An unhandled error has occurred inside Forge:
Invalid argument.
InvalidArgument: Invalid argument.

{
  Code: 'InvalidArgument',
  Message: 'Invalid argument.',
  Details: 'POST object expects Content-Type multipart/form-data'
}

Proposed Solution

I think it is possible to make @electron-forge/publisher-s3 compatible with Google Cloud Storage.

Alternatives Considered

GCS publisher.

Additional Information

"publishers": [
        {
          "name": "@electron-forge/publisher-s3",
          "config": {
            "bucket": "my-backet",
            "endpoint": "https://storage.googleapis.com",
            "public": false
          }
        }
      ]

[malept]

@mahnunchik it already uses PUT.

[maccman]

This would be cool to get merged.