Add new "common" schematic to share configurations for all schematics at once

[Maryannah]

Command

generate

Description

Implement an internal artifact to commonize the configuration of schematics so that all schematics can share a common configuration by default, and override on a per-artifact basis if needed. Currently, all configurations are duplicated, and while not that annoying to deal with for a single collection, it can quickly add up when using several collections.

Describe the solution you'd like

Actual :

{
  "schematics": {
    "@schematics/angular:component": { "skipSelector": true },
    "@schematics/angular:directive": { "skipSelector": true },
    "@schematics/angular:pipe": { "skipSelector": true }
  }
}

Proposed :

{
  "schematics": {
    "@schematics/angular:common": { "skipSelector": true }
  }
}

This new common schematic would contain either

• only fields that are common to all artifacts
• All fields possible, even if not applicable to certain artifacts

Resolving would follow this pattern :

• Look for common artifact schematic value
• If existing, apply value
  • If all fields are possible : also check if value is applicable to artifact
• Look for direct artifact schematic value
• Override value

Describe alternatives you've considered

Doing it by hand as already done today is the only solution