Rewrite H5Exporter and factory to remove class properties

[malik-irain]

Solves #49

[codecov]

Codecov Report

❌ Patch coverage is 80.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 76.67%. Comparing base (37456f8) to head (1598f90).
⚠️ Report is 8 commits behind head on 5.0.x_dev.

Files with missing lines	Patch %	Lines
src/pymodaq_data/h5modules/exporter.py	80.00%	1 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##           5.0.x_dev      #50      +/-   ##
=============================================
+ Coverage      76.50%   76.67%   +0.17%     
=============================================
  Files             17       17              
  Lines           3796     3768      -28     
=============================================
- Hits            2904     2889      -15     
+ Misses           892      879      -13     

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