GCP CloudWorkstations plugin

[mondragonda]

Hey, I just made a Pull Request!

This PR adds a first version of a plugin for GCP CloudWorkstations. It does it by relating components with a CloudWorkstations config defined by google.com/cloudworkstations-config annotation . It allows to directly access existent GCP Workstations in Backstage. At this version it lists the workstations available for the user (Google OAuth authentication), allows to add new workstations and launch them through the Backstage component based on GCP IAM permissions.

✔️ Checklist

• A changeset describing the change and affected packages. (more info)
• Added or updated documentation
• Tests for new functionality and regression tests for bug fixes
• Screenshots attached (for UI changes)
• All your commits have a Signed-off-by line in the message. (more info)

[backstage-goalie]

Unnecessary Changesets

The following package(s) are private and do not need a changeset:

• example-app

Changed Packages

Package Name	Package Path	Changeset Bump	Current Version
example-app	packages/app	minor	v0.2.92-next.1
@backstage/plugin-gcp-cloudworkstations	plugins/gcp-cloudworkstations	major	v0.0.0

[github-actions]

Uffizzi Cluster pr-22653 was deleted.

[mondragonda]

it will be re opened.

[awanlin]

Hi @mondragonda, this plugin look very interesting but I just wanted to let you know that we are no longer accepting plugins into the main Backstage repo, more details here: #20266.

Work is being done to get a Community repo created and the needed tooling in place but that process has just started so I don't have a new place to direct you to at this time. In the mean time you could create a public GitHub repo, publish your plugin to NPM, and then add it to the Plugin Directory following this guide: https://backstage.io/docs/plugins/add-to-directory