Publish this action in the Marketplace

[humitos]

After merging #16 and releasing a new v1 in #17; it would be good to publish this action in the GitHub Marketplace so people can find it easily. I don't have experience about how it works, but it would be good to research a little.

https://docs.github.com/en/actions/creating-actions/publishing-actions-in-github-marketplace

[humitos]

Meh, we decided to store multiple actions in one repository some time ago. Due to that, we cannot public the action in the marketplace:

Each repository must contain a single action.
The action's metadata file (action.yml or action.yaml) must be in the root directory of the repository.

I don't think it's worth to roll back this decision now. Publishing in the marketplace is a nice to have, and I don't think we will get lot of benefits from it, considering the work we have to undo now.

[ericholscher]

@humitos Annoying limitation, but I'm fine with that 👍