Upgrade to Angular 10

[b-t-o]

using this module is only possible if you disable angular ivy in tsconfig.app.json:

"angularCompilerOptions":
{ "enableIvy": false }

if you do this, you will get a warning:

`WARNING in D:\projekte\www\tierwebseite\src\app\onlineantrag\onlineantrag.module.ngfactory.js depends on 'angular-inport'. CommonJS or AMD dependencies can cause optimization bailouts.
For more info see: https://angular.io/guide/build#configuring-commonjs-dependencies

WARNING in D:\projekte\www\tierwebseite\src\app\onlineantrag\onlineantrag.module.ngfactory.js depends on 'angular-inport/dist/utils/scroll-observable'. CommonJS or AMD dependencies can cause optimization bailouts.
For more info see: https://angular.io/guide/build#configuring-commonjs-dependencies

WARNING in D:\projekte\www\tierwebseite\src\app\onlineantrag\onlineantrag.module.ngfactory.js depends on 'angular-inport/dist/utils/viewport-ruler'. CommonJS or AMD dependencies can cause optimization bailouts.
For more info see: https://angular.io/guide/build#configuring-commonjs-dependencies`

Please update to Angular 10