Icon to show Code VScode is still running

[gulshan17]

Issue Type: Feature Request

Previously when I was using Python interactive mode, it used to show whether VSCode is still running cell at the bottom but the new UI doesn't show it anywhere.

Extension version: 1.1.0
VS Code version: Code 1.59.0 (379476f0e13988d90fab105c5c19e7abc8b1dea8, 2021-08-04T23:13:12.822Z)
OS version: Windows_NT x64 10.0.19042
Restricted Mode: No