feat!: Add separate toggles for AWS ECR and GHCR

[staticaland]

Add inputs that toggle login and push.

Important

This removes the inputs push, aws_ecr_enable and ghcr_enable and replaces it with aws_ecr_login, aws_ecr_push, ghcr_login, ghcr_push. You MUST update your caller workflow to use these new inputs.

Example:

    with:
      environment: pirates-dev-ecr
      file: docs/Dockerfile

      region: eu-west-1
      aws_ecr_login: true
      aws_ecr_push: true
      ecr_repository_name: pirates-dev-km

      ghcr_login: true
      ghcr_push: true
      ghcr_image_name: "${{ github.repository }}/km"

Motivation and Context

Closes #30