Improved namespace naming

[evan-palmer]

Checklist

• [x] I have performed a thorough review of my code
• [x] I have sufficiently commented my code
• [x] The implementation follows the project style conventions
• [x] All project unit tests are passing
• [x] If relevant, documentation has been provided or updated to discuss the changes made
• [x] System integration tests were performed successfully

Changes Made

This PR places the alpha_driver and alpha_hardware namespaces under a single common alpha namespace, with smaller namespaces for the respective modules (i.e., alpha::driver and alpha::hardware).

Associated Issues

• Fixes #34

Files Changed

All file namespaces were updated according to the changes documented above.

Testing

Regression tests were performed to verify the correctness of the changes.