Put the Faux HDF Functionality into bapsflib.faux

[rocco8773]

This PR creates the bapsflib.faux module to contain the faux HDF5 builder functionality. This functionality is explicitly used for package testing and generating example documentation. The later is not possible until this PR is merged.

The faux module is NOT explicitly exposed to the bapsflib namespace. Thus, it is is NOT available with a simple import bapsflib. Instead one would need to do an explicit import, import bapsflib.faux.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.87%. Comparing base (799debd) to head (473db2a).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #199   +/-   ##
=======================================
  Coverage   98.87%   98.87%           
=======================================
  Files          54       54           
  Lines        3733     3733           
  Branches      702      702           
=======================================
  Hits         3691     3691           
  Misses         38       38           
  Partials        4        4           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.