feat(schema): add schema command to dump JSON Schema for zot config (#3905)

Fixes https://github.com/project-zot/zot/issues/3882

Signed-off-by: Ramkumar Chinchani <rchincha.dev@gmail.com>

.github/workflows/build.yaml

@@ -62,7 +62,7 @@ jobs:
           sudo apt-get update
           sudo apt-get install rpm
           sudo apt-get install snapd
-          sudo apt-get install libgpgme-dev libassuan-dev libbtrfs-dev libdevmapper-dev pkg-config
+          sudo apt-get install libgpgme-dev libassuan-dev libbtrfs-dev libdevmapper-dev pkg-config python3-jsonschema
           git clone https://github.com/containers/skopeo -b v1.12.0 $GITHUB_WORKSPACE/src/github.com/containers/skopeo
           cd $GITHUB_WORKSPACE/src/github.com/containers/skopeo && \
             make bin/skopeo && \
@@ -90,6 +90,11 @@ jobs:
           curl -X POST -H "Content-Type: application/json" -d @.pkg/debug/githubWorkflows/introspection-query.json http://localhost:5000/v2/_zot/ext/search | jq > bin/zot-gql-introspection-result.json
           pkill zot
 
+      - name: Generate zot config schema on Release
+        if: github.event_name == 'release' && github.event.action == 'published' && matrix.os == 'linux' && matrix.arch == 'amd64'
+        run: |
+          make verify-config-schema
+
       - if: github.event_name == 'release' && github.event.action == 'published'
         name: Publish artifacts on releases
         uses: svenstaro/upload-release-action@v2