✨ first draft of improved xaxis filtering

[jonasvdd]

What does this PR do:

• renamed variables to distinguish between layout-(x)axis properties and trace-(x)axis properties (which makes the code more readable)
• use the Figures _grid_ref variable to construct the mapping between layout-xaxis and trace-xaxis

[codecov-commenter]

Codecov Report

Merging #250 (3999ec6) into main (b712c67) will decrease coverage by 0.01%.
Report is 1 commits behind head on main.
The diff coverage is 100.00%.

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@@            Coverage Diff             @@
##             main     #250      +/-   ##
==========================================
- Coverage   96.87%   96.87%   -0.01%     
==========================================
  Files          14       14              
  Lines        1025     1024       -1     
==========================================
- Hits          993      992       -1     
  Misses         32       32              

Files Changed	Coverage Δ
...ler/figure_resampler/figure_resampler_interface.py	99.74% <100.00%> (-0.01%)	⬇️

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[jonasvdd]

Ready for review @jvdd!