Keep opened tabs when opening folder

[Nerpson]

Issue Type: Feature Request

Is it possible to keep the opened tabs when opening a folder if these files belong to the folder?
It happens to me many times when I open a file and then find out I need the whole project, but it's not loaded. So I drag the entire folder in the window but I lose the file.

VS Code version: Code 1.58.2 (c3f1263, 2021-07-14T22:10:15.214Z)
OS version: Windows_NT x64 10.0.19043
Restricted Mode: No

[vscodebot]

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• Folder keeps closing (#126139)
• Opens the folder with the folder '.vscode' instead of the folder from which the last file was opened (#128383)

[bpasero]

/duplicate #35109