ng serve does not generate service worker files

[koenig-dominik]

🚀 Feature request

Command (mark with an x)

• new
• build
• serve
• test
• e2e
• generate
• add
• update
• lint
• xi18n
• run
• config
• help
• version
• doc

Description

A clear and concise description of the problem or missing capability...

The command ng serve currently does not generate service worker files.
It may be because in the past it was not possible to register service workers in non SSL sites.
There is now a exception to that, all http://localhost or http://127.x.y.z addresses do work (at least in Chrome)
This was already shortly discussed in #16883 (comment) but only the generation for ng build --watch was implemented.
ng serve & serve-ssr do not generate these files.

Describe the solution you'd like

If you have a solution in mind, please describe it.

Generate the needed service worker files in @angular-devkit/build-angular:dev-server & @nguniversal/builders:ssr-dev-server

Describe alternatives you've considered

Have you considered any alternative solutions or workarounds?

Build the universal server & run that without serve-ssr, which is really cumbersome in development

[alan-agius4]

Duplicate of #9869

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