feat: add RideBus status widget integration

- Implemented StatusWidget component for embedding RideBus service status.
- Created widget-client.js for client-side interaction with the status widget.
- Developed install-widget-integrations script to automate integration into PWA, website, and admin projects.
- Introduced server-side widget rendering in widget.mjs for generating status widget HTML.
- Added comprehensive tests for widget functionality and integration.

Dockerfile

@@ -18,6 +18,7 @@ COPY --from=build /app/dist ./dist
 COPY server ./server
 COPY shared ./shared
 COPY config ./config
+COPY public/widget-client.js ./public/widget-client.js
 RUN mkdir -p /app/data && chown -R node:node /app/data
 USER node
 EXPOSE 5188