Host Your Own Instance

Through @brandonm4 report, I learned that Clockify can also be self-hosted and doesn't have to be all "in the cloud".

As such, I've added a new settings field, which allows you to enter your custom API URL if needed. The default is set to the cloud instance, so for most users, nothing needs to be configured.

On the technical side, I've setup GitHub Actions, which produces a complete plugin build for every commit/push. This allows for a much faster iteration, since I don't have to spend time, manually cobble together such a build on two different platforms.