feat(google-sheets): add find worksheet action

packages/docs/pages/apps/google-sheets/actions.md

@@ -7,6 +7,8 @@ items:
     desc: Creates a new row in a specific spreadsheet.
   - name: Create worksheet
     desc: Create a blank worksheet with a title. Optionally, provide headers.
+  - name: Find worksheet
+    desc: Finds a worksheet by title. Optionally, create a worksheet if none are found.
 ---
 
 <script setup>