Add OpenAPI specification and generation command

justfile

@@ -41,6 +41,11 @@ generate-entity:
   # delegate to cli
   just cli db:migrate_and_generate --output-path ../../public/database/src/generated/entities
 
+generate-openapi:
+  # delegate to cli
+  cd apps/api && \
+  cargo run -- generate:openapi --output-path ./swagger.json
+
 build-frontend:
   # build frontend assets
   cd apps/frontend && \