Extension causes high cpu load

[sbimochan]

• Issue Type: Performance
• Extension Name: batch-rename-extension
• Extension Version: 0.0.5
• OS Version: Darwin arm64 21.1.0
• VS Code version: 1.67.1

⚠️ Make sure to attach this file from your home-directory:
⚠️file:///var/folders/6m/q54nccs91gv332rz_488pc_r0000gn/T/JannisX11.batch-rename-extension-unresponsive.cpuprofile.txt

Find more details here: https://github.com/microsoft/vscode/wiki/Explain-extension-causes-high-cpu-load