Is your feature request related to a problem? Please describe.
VSCode allows to create workspaces that are not single project/folder.
For example, you want the workspace to have "project_a" and "project_b" opened together for some reason.
{
"folders": [
{
"path": "project_a"
},
{
"path": "project_b"
}
]
}
When opening a new terminal, there is a prompt to set the working directory of the terminal:

vscode-R does not ask and use the first (in alphabetical order) as working directory.

Describe the solution you'd like
The feature would ask the user to set the working directory as it is currently done for new terminals.