[Angular] Short Imports with TypeScript Path Mapping

The idea is change from:

import {CoreModule} from '../core/core.module';

to: 

import {CoreModule} from '@core/core.module';

To do that, we need to modify tsconfig.json file:

{
    ...
    "compilerOptions": {
        ...
        "baseUrl": "src",
        "paths": {
            "@core/*": ["app/core/*"],
            "@shared/*": ["app/shared/*"],
            "@environments/*": ["environments/*"]
         }
    }  
}