bake: split definition into two files

Allows to either include tags or labels or both definitions.
Keep bake-file output for backward compatibility.

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

.github/workflows/ci.yml

@@ -323,7 +323,8 @@ jobs:
         with:
           files: |
             ./test/docker-bake.hcl
-            ${{ steps.docker_meta.outputs.bake-file }}
+            ${{ steps.docker_meta.outputs.bake-file-tags }}
+            ${{ steps.docker_meta.outputs.bake-file-labels }}
           targets: |
             release