Allow use of lfs and caching

[MichaelKora]

Fixes #126

[JakobEdding]

Nice work! Once this is merged, we can use this action instead of the standard actions/cache in actions where we already need to be able to checkout LFS files:

• ci-templates/actions/java-gradle-build-jib/action.yaml

  Line 46 in e55bc07

  lfs: ${{ inputs.download-lfs-files }}

• ci-templates/actions/java-gradle-test/action.yaml

  Line 52 in e55bc07

  lfs: ${{ inputs.download-lfs-files }}