[ElectronCompat > Shell] Add openExternal

moduleWrappers/electron/index.js

@@ -1 +1,2 @@
-export * as clipboard from './clipboard';
+export * as clipboard from './clipboard';
+export * as shell from './shell';

moduleWrappers/electron/shell.js

@@ -0,0 +1,5 @@
+export const openExternal = (url) => {
+  // Discord makes new tabs / windows (via window.open) use electron.shell.openExternal internally, so just use window.open
+
+  window.open(url);
+};