docs: adding Cypress Test Explorer extension

Author: dpanshug

Diff for: docs/app/tooling/IDE-integration.mdx

@@ -73,6 +73,8 @@ with Cypress.
 - [Test Utils](https://marketplace.visualstudio.com/items?itemName=chrisbreiding.test-utils):
   Easily add or remove `.only` and `.skip` modifiers with keyboard shortcuts or
   the command palette.
+- [Cypress Test Explorer](https://marketplace.visualstudio.com/items?itemName=dpanshug.cypress-test-explorer): 
+  Helps you discover, navigate and run Cypress tests directly from the editor.
 
 ### IntelliJ Platform