Missing high-level features from v1 in v2 like `tag_with_ref` and `add_git_labels`

The utility in using the action to me, over just running the docker commands manually, was in the high-level interface offered by helpers in v1 like:

• add_git_labels
• tag_with_sha
• tag_with_ref

These all appear to have disappeared in v2. Are these planned to be brought back?

Doing:

-  name: Build and push
   uses: docker/build-push-action@v2
   with:
     push: true
     tags: user/app:latest

Doesn’t provide a huge benefit over:

- name: Build and push
  run: |
     docker buildx build --push user/app:latest .

Compared to implementing any of the following which requires lots of logic and loops.

• add_git_labels
• tag_with_sha
• tag_with_ref

[Surgo]

I published a tag_with_sha and tag_with_ref like action 😃

https://github.com/marketplace/actions/generate-smart-tag-for-docker-images

[crazy-max]

@itzg @docwhat I have added tags through git ref and OCI Image Format Specification labels example to #119. See https://github.com/crazy-max/docker-build-push-action/blob/dbdfd86c1d1e402adeb2c6f293275ae35d99e982/README.md#tags-and-labels-handling.