[MRG] Fix dipole plot scale and smooth factors

[kmilo9999]

• Adding function to query if the data is a simulation or loaded from a file
• Reorganizing the compare visualization tab
• Adding scale and smooth factors float widgets
• Fixing logic to apply the new parameters to the plots

solves #717

[kmilo9999]

@ntolley @dylansdaniels
We have noticed that during the plotting of simulation data, the scaling and smooth factors (3000 and 30 respectively) are automatically applied to the data. Those two default values are also applied to the loaded data (at plotting ) which modifies the value of the data. Also, when comparing the two datasets, both are adjusted by those factors which leads to the inaccuracies in the plot. To address this, we adjusted the initial values of the loaded data to have smooth factor of 0 and scaling factor 1 to preserve the original data values. This is the comparison plot between simulate and loaded data

What is the real purpose of the default smooth and scaling to 30 and 3000 respectively? What do you think about setting the loaded data default values to smooth = 0 and scaling = 1 ?

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 87.50000% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 92.73%. Comparing base (54ddd40) to head (118d2af). Report is 1 commits behind head on master.

:exclamation: Current head 118d2af differs from pull request most recent head e83b008. Consider uploading reports for the commit e83b008 to get more accurate results

Files	Patch %	Lines
hnn_core/gui/_viz_manager.py	86.66%	2 Missing :warning:

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #730 +/- ## ========================================== + Coverage 92.66% 92.73% +0.06% ========================================== Files 27 27 Lines 4911 4917 +6 ========================================== + Hits 4551 4560 +9 + Misses 360 357 -3 ```

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[gtdang]

Thanks Camilo!