Base libs and apps settings in angular.json

# 🚀 Feature request

### Description
We have many libs and apps in our monorepo. The problem is that most settings for libs in angular.json are identical, same for apps. We have few thousand lines of code in our angular.json, but it could be greatly reduced if we have base settings which can be overrided.

### Describe the solution you'd like
Add base settings for all libs/apps in angular.json which can be overrided by app or lib itself.

從 angular.json 開始，比較程式庫和應用程式中重複的設定。定義應如何表示和覆寫共用的基礎設定，然後確認組態仍然有效，並能為應用程式和程式庫產生預期的設定。

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