Move common utils out of conversation view

ts/util/markAllAsVerifiedDefault.ts

@@ -0,0 +1,18 @@
+// Copyright 2021 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import type { ConversationModel } from '../models/conversations';
+
+export async function markAllAsVerifiedDefault(
+  unverified: ReadonlyArray<ConversationModel>
+): Promise<void> {
+  await Promise.all(
+    unverified.map(contact => {
+      if (contact.isUnverified()) {
+        return contact.setVerifiedDefault();
+      }
+
+      return null;
+    })
+  );
+}