Updates to configurations view to work with subdirectories

[sagerb]

Intent

Resolves #1951

• move progress indicator to configurations view
• update clone initial name for projectDir
• add progress indicator for children tree population (relies upon sometimes slow API)

Type of Change

• • [ ] Bug Fix
• • [x] New Feature
• • [ ] Breaking Change
• • [ ] Documentation
• • [x] Refactor
• • [ ] Tooling

Approach

Automated Tests

Directions for Reviewers

• Verify operations work for configurations view
• Verify that when creating a new configuration when VSCode has opened a folder containing a lot of entrypoints, that the progress indicator is shown within the Configurations view (vs. down below in the bottom status line).
• Verify that when opening very large directory tree and switching over to publisher, that configurations window when expanded shows progress indicator until it is able to load.

Checklist

• [ ] I have updated CHANGELOG.md to cover notable changes.