title: Flattening assets globbed in angular.json
body: <p>I'm packing my webapp with <code>angular-cli</code> and my <code>angular.json</code> looks like the following:</p>
  
  <pre><code>{
   "projects": {
    "example-web": {
     "architect": {
      "build": {
       "builder": "@angular-devkit/build-angular:browser",
       "options": {
        "outputPath": "dist",
        "assets": [
         "src/favicon.ico", {
          "glob": "**/*.svg",
          "input": "src",
          "output": "/"
         }
        ],
       }
      }
     }
    }
   }
  }
  </code></pre>
  
  <p>This is globbing my svgs just fine, but it's replicating my <code>src</code> directory hierarchy.  I prefer to organize my sources with nested folders, so I'd really like to instruct <code>angular-cli</code> to flatten these assets.  Of course there's other tools I can use, but my question is:</p>
  
  <blockquote>
    <p>Does <code>angular-cli</code> (<code>@angular-devkit</code>) provide a configuration option
    to flatten assets?</p>
  </blockquote>