Issue Description:

Swift suppose to solve between types and modules, but it's not working very well as of today. This is why I'd love to see rename of "Workspace" and "Basic" or "SourceControl" or "Build" modules to the prefixed versions like others we already have: "SPMUtility", "SPMLibc", "SPMLLBuild".

Reasoning:
Especially "Workspace" name is easy to be a conflicting name. Consider this simple example of shadowing:

// SPM module
import Workspace

// app model
class Workspace {
}

This makes local 'Workspace' preferred when resolving and makes 'Workspace.Workspace' not accessible.

Proposed PR: #2241