ci: introduce self-host docker publish workflow (auto tag from package.json) []

Author: jatinlodhi2002

.github/workflows/sparrow-api-selfhost-publish.yml

@@ -64,4 +64,5 @@ jobs:
             --platform linux/amd64,linux/arm64 \
             --build-arg GITHUB_TOKEN=${{ secrets.SPARROW_GITHUB_TOKEN }} \
             -t $DOCKER_IMAGE_NAME:$VERSION \
+            -t $DOCKER_IMAGE_NAME:latest \
             --push .