docs: Document version csv format

[vvoland]

• follow up to: Support downloading binaries from docker images #106

[crazy-max]

PTAL @dvdksn

[crazy-max]

add this to TOC after

setup-docker-action/README.md

Line 33 in 2a248d8

* [inputs](#inputs)

[crazy-max]

nit: got a bit confused at first when looking at this table. Maybe we could split by type like we do in metadata-action repo: https://github.com/docker/metadata-action?tab=readme-ov-file#tags-input

[dvdksn]

oh 🤦🏻 I was too slow to submit my comments. @crazy-max I can do a follow-up PR if that's OK with you?

[dvdksn]

Suggested change

	By default, the latest stable version of Docker is fetched from download.docker.com.
	You can specify a specific version number (e.g. `v27.4.0`).
	Which is a shorthand for the full comma separated value:
	`type=archive,channel=stable,version=v27.4.0`
	By default, the latest stable version of Docker is fetched from download.docker.com.
	To specify a specific version, use the `version` input:
	```yaml
	-
	name: Set up Docker
	uses: docker/setup-docker-action@v4
	with:
	version: 27.4.0
	```

[dvdksn]

Suggested change

	You can also use this full csv format instead.
	The `version` input also supports a CSV string format for more advanced
	version selection. For example, to use v27.3.0-rc.1 from the test channel:
	```yaml
	-
	name: Set up Docker
	uses: docker/setup-docker-action@v4
	with:
	version: type=archive,channel=stable,version=v27.4.0
	```

[dvdksn]

Suggested change

	Other possible source type is `image` which will pull the Docker binaries from the
	`moby/moby-bin` and `dockereng/cli-bin` Docker Hub repositories.
	The advantage of using this source type is that these images are built by the Moby and Docker CI pipelines
	for each branch and PR, so you can use the `tag` input to install a specific version or branch (e.g. `master`).
	If you use the CSV format with `type=archive`, you can use `channel` and
	`version` to select the version of the Docker archive. Alternatively, you can
	use `type=image,tag=<version>` instead of `type=archive`.
	If you use `type=image`, the runner pulls the binaries from the `moby/moby-bin`
	(Docker daemon binary) and `dockereng/cli-bin` (Docker CLI binary) Docker Hub
	repositories. Sourcing the Docker binary from the Docker Hub repositories is
	useful when you want to install a version of Docker for a specific Git branch.
	These images are built by the Moby and Docker CI pipelines for each branch and PR.
	For example, to use the latest `master` version of Docker:
	```yaml
	-
	name: Set up Docker
	uses: docker/setup-docker-action@v4
	with:
	version: type=image,tag=master
	```

[crazy-max]

oh 🤦🏻 I was too slow to submit my comments. @crazy-max I can do a follow-up PR if that's OK with you?

Ah sorry I merged too fast, please feel free to open a PR 🙏