* Introduce Echo for collecting frontend metrics * Update public/app/core/services/echo/Echo.ts Co-Authored-By: Peter Holmberg <peterholmberg@users.noreply.github.com> * Custom meta when adding event * Rename consumer to backend * Remove buffer from Echo * Minor tweaks * Update package.json * Update public/app/app.ts * Update public/app/app.ts * Collect paint metrics when collecting tti. Remove echoBackendFactory * Update yarn.lock * Move Echo interfaces to runtime * progress on meta and echo * Collect meta analytics events * Move MetaanalyticsBackend to enterprise repo * Fixed unit tests * Removed unused type from test * Fixed issues with chunk loading (reverted index-template changes) * Restored changes * Fixed webpack prod
