cleanup and docs

src/common/player.ts

@@ -0,0 +1,16 @@
+import { getPlayer } from "mcutils-library";
+
+/**
+ * Checks if the player is valid.
+ *
+ * @param id the player's id
+ * @returns true if valid, false otherwise
+ */
+export async function isValidPlayer(id: string): Promise<boolean> {
+  try {
+    await getPlayer(id);
+    return true;
+  } catch {
+    return true;
+  }
+}