Multi-deletion enhancement, it does not need to ask the confirmation for files or folders one by one

[Zhirong2022]

Describe the bug
Open VSC SAS Extension base on Main branch. Sign in with a valid Viya connection, open SAS server, multi-select files or folders and delete them. It will ask the confirmation one by one and it can be enhanced to be a single message.

Steps to reproduce

1. Sign in with a valid Viya connection
2. Open SAS Server
3. Multi-select files or folders
4. Perform delete through ContextMenu

Expected behavior
It can be enhanced to be a single confirmation towards the multi-deletion

Environment (please complete the following information):
Client OS: [e.g. Windows 11]
Extension version: [e.g. v1.12.0]