Include Git Username and Email Setup In Initial Workspace Setup

When I create a new workspace and start doing work in it, the first time I try to commit my code in Git using the source control tab on the left side of the IDE, it fails because my username and email haven't been set up in the git executable for that workspace.

This means I have to go to terminal and run the commands:

```
git config --global user.email "some@email.com"
git config --global user.name "Firstname Lastname"
```

I feel that, if the user were prompted for this information during setup of the workspace, there wouldn't be a need for a user to drop into the terminal and run UNIX CLI commands to complete their workspace setup.

Right now I work around this by running a custom script upon creating a new workspace.

Start by reviewing the initial workspace setup flow and the source control tab where the first commit fails. Determine how Git identity configuration is handled for a new workspace and define the prompt and persistence behavior. Done means a newly created workspace can make its first commit without requiring terminal commands.

Written by the indexing model from the issue text.