move common dir

src/app/common/server.ts

@@ -0,0 +1,17 @@
+import { getServer, ServerPlatform } from "mcutils-library";
+
+/**
+ * Checks if the server is valid.
+ *
+ * @param platform the server's platform
+ * @param query the hostname for the server
+ * @returns true if valid, false otherwise
+ */
+export async function isValidServer(platform: ServerPlatform, query: string): Promise<boolean> {
+  try {
+    await getServer(platform, query);
+    return true;
+  } catch {
+    return false;
+  }
+}