WIP: spike - vite dev server for SSR

[Platonn]

Working PoC of vite dev server with SSR:

• removed noSsr from target "serve" in storefrontapp/project.json
• to make it work I neeed to make following changes:
  • ngExpressEngine now uses AngularNodeAppEngine instead of CommonEngine
  • server.ts now calls ngExpressEngine directly as a function instead of via Express' res.render() method
  • removed import 'zone.js/plugins/zone-error' from environment.ts (as it caused errors; and this code seems not needed anyway)

How to run
SERVER_REQUEST_ORIGIN=http://localhost:4200 NODE_TLS_REJECT_UNAUTHORIZED=0 npm run start

Caveats:

• standardized SSR logging is disabled (i.e. we use default LoggerService with console.log) because I could not pass extra providers (with EXPRESS_SERVER_LOGGER) from Express to AngularNodeAppEngine
• REQUEST and RESPONSE injection tokens are not provided, because I could not pass extra providers from Express to Angular AngularNodeAppEngine
• CSR fallback is mocked - returning dummy html instead of real CSR shell app html, because I couldn't read physical file from virtual vite's files folder
• prod build compiles (SERVER_REQUEST_ORIGIN=http://localhost:4200 NODE_TLS_REJECT_UNAUTHORIZED=0 npm run start)
  • but then serving this app fails with angular error in console NG05104

Next steps:

• try adding outputMode: server in storefrontapp/project.json for the target build and then fixing build issues
• addressing caveats