[BUG] Creating a new project results in no new project when performing c!create for second time

[nickmartin1ee7]

Describe the bug Initially creating a project works, however creating a second project causes nothing to happen.

To Reproduce Steps to reproduce the behavior:

1. c!create myproject
2. c!create anotherone
3. c!list results in 1 project "myproject"

Expected behavior A second project is created

Screenshots

Additional context There is a mistake in the ProjectManager class not incrementing the next key.