fix(core): update

ts/domtools.classes.domtools.ts

@@ -143,6 +143,14 @@ export class DomTools {
     this.elements.headElement.appendChild(styleElement);
   }
 
+  public async setExternalCss(cssLinkArg: string) {
+    const cssTag = document.createElement('link');
+    cssTag.rel = 'stylesheet';
+    cssTag.crossOrigin = 'anonymous';
+    cssTag.href = cssLinkArg;
+    document.head.append(cssTag);
+  }
+
   public setVirtualViewport(environmentArg: TViewport) {
     this.domToolsStatePart.dispatchAction(this.actionSetVirtualViewport, environmentArg);
   }

ts/domtools.elementbasic.ts

@@ -56,6 +56,9 @@ export const setup = async (elementArg?: LitElement): Promise<DomTools> => {
       @import url('https://fonts.googleapis.com/css2?family=Roboto+Mono:wght@100;300;400');
     `);
 
+    // font awesome brands
+    domTools.setExternalCss('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.1/css/brands.min.css');
+
     // scrollbars
     domTools.setGlobalStyles(`
       ${scrollBarStyles}