[ergonomics] profile driver and base module imports

# Current behavior

It takes ~2 seconds to do:

> from hamilton import driver, base

We should profile this and see where the time is being spent.

## Library & System Information
Latest hamilton on macOS, python 3.10.

# Expected behavior
It should load in < 1 second.

# Additional context
This is a quality of life task.

This task requires:

1. to use a profiler to figure out where time is being spent
2. report the results
3. provide recommendations

Start by reproducing the `from hamilton import driver, base` import on macOS with Python 3.10, then profile it to identify where the roughly two seconds are spent. Report the profiling results and recommendations; the expected outcome is an import time below one second. No files or tests are named in the issue.

Written by the indexing model from the issue text.