Remove code duplication for time and frequency stitched

[domfournier]

Proposed changes to PR #1300 to reduce code duplication and complexity.

Main changes:

1- Consolidate the methods of time and frequency Simulation1DLayeredStitched onto base class. 2- Storage of Hankel coefficients in dataclass container 3- Storage of Cole-Cole parameters in dataclass container 4- Review of new regularization and mesh class (to be continued)

[codecov[bot]]

Codecov Report

Attention: 467 lines in your changes are missing coverage. Please review.

Comparison is base (3d7666f) 80.32% compared to head (7d8c893) 81.39%. Report is 25 commits behind head on em1d_stitched_update.

Files	Patch %	Lines
SimPEG/electromagnetics/utils/em1d_utils.py	24.24%	175 Missing :warning:
...mPEG/regularization/regularization_mesh_lateral.py	36.51%	113 Missing :warning:
SimPEG/electromagnetics/base_1d_stitched.py	71.75%	87 Missing :warning:
SimPEG/regularization/laterally_constrained.py	0.00%	47 Missing :warning:
...imPEG/potential_fields/gravity/_numba_functions.py	32.55%	29 Missing :warning:
SimPEG/electromagnetics/base_1d.py	92.04%	7 Missing :warning:
SimPEG/potential_fields/gravity/simulation.py	94.05%	6 Missing :warning:
SimPEG/regularization/base.py	80.00%	2 Missing :warning:
...mPEG/electromagnetics/time_domain/simulation_1d.py	97.61%	1 Missing :warning:

Additional details and impacted files

@@                   Coverage Diff                    @@
##           em1d_stitched_update    #1314      +/-   ##
========================================================
+ Coverage                 80.32%   81.39%   +1.07%     
========================================================
  Files                       164      170       +6     
  Lines                     25099    26094     +995     
========================================================
+ Hits                      20161    21240    +1079     
+ Misses                     4938     4854      -84     

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