feature(generate): provide options to default encapsulation & change detection

[Brocco]

Closes #2822

[filipesilva]

The changes themselves lgtm but can you have a look at the failing CI?

[Brocco]

@filipesilva the CI failures were a result of another issue. I rebased and CI is good now.

[Bielik20]

Hello, is there documentation or at least an example how to use it?
Also does it work for ng library? Do I need to configure it manually for every lib or just in the main app is ok?

[earshinov]

@Bielik20 , in case you haven't yet figured it out, here is example usage:

angular.json:

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "version": 1,
  "newProjectRoot": "projects",
  "projects": {
    "frontend": {
      "root": "",
      "sourceRoot": "src",
      "projectType": "application",
      "prefix": "app",
      "schematics": {
        "@schematics/angular:component": {
>>>       "changeDetection": "OnPush",
          "style": "sass"
        }
      },

Instead of relying on docs, check out the schema file referenced in the beginning of angular.json.

I'll leave the other questions to Angular maintainers. Not experienced enough myself.

[Bielik20]

Thank you for your help. Ok I misunderstood. I was hoping to set default change detection strategy, not make schematics set one during generation.

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