Currently, in the Application Explorer for the active namespace, we have an icon (when hovering) to change the active project. The icon is not self-explanatory, we need to update the icon. Let's use this icon from [vscode icon listing doc](https://code.visualstudio.com/api/references/icons-in-labels#icon-listing). <img width="240" alt="Screenshot 2022-10-27 at 4 09 41 AM" src="https://user-images.githubusercontent.com/3133356/198152053-5d20e439-378b-4400-9e3f-25272b40c635.png">
Currently, in the Application Explorer for the active namespace, we have an icon (when hovering) to change the active project.
The icon is not self-explanatory, we need to update the icon.
Let's use this icon from vscode icon listing doc.
