Is it possible to see some processing/loading indicator when I do sfdx commands in vscode terminal?
Like with any terminal command, I do not believe there is a way to see a loading indicator. Some commands like
sfdx force:package:install or
sfdx force:mdapi:deploy will provide continuous status feedback in terminal:
The Salesforce CLI Integration for VS Code provides a status notification and additional details in the Output panel when clicking on buttons like the org open button:
Additionally, any command made using the Command Palette will show in the Output panel and provide a status notification: