title: Datagrid bind to reactive form control
body: <p>I am wondering if its possible to bind a reactive form's control to the Clarity Design System's datagrid clrDgSelected 2 way binding?</p>
  
  <p>I am using the example here on their <a href="https://vmware.github.io/clarity/documentation/datagrid/selection" rel="nofollow noreferrer">website</a> to do a simple datagrid and integrate it with a reactive form.</p>
  
  <p>my form is very simple:</p>
  
  <pre><code>constructor(
      private fb: FormBuilder,
    ) {
      this.testForm= this.fb.group({
        title: ['', Validators.required],
        selectionList: ['', Validators.required]
      });
    }
  </code></pre>
  
  <p>Now i want to incorporate teh selectionList instead of the selected as per the their example.</p>
  
  <pre><code>&lt;clr-datagrid [(clrDgSelected)]="selected"&gt;
      &lt;-- ... --&gt;
      &lt;clr-dg-row *clrDgItems="let user of users" [clrDgItem]="user"&gt;
          &lt;-- ... --&gt;
      &lt;/clr-dg-row&gt;
     &lt;-- ... --&gt;
  &lt;/clr-datagrid&gt;
  </code></pre>
  
  <p>This way i can control form validity as well as ensure the selectionList gets populated directly.</p>