feat: fist version of the gap analysis tab for ts

[alexbarros]

Adds a gap analysis tab to time series variables indicating the gaps in the series

[codecov-commenter]

Codecov Report

Patch coverage: 60.27% and project coverage change: -0.16% ⚠️

Comparison is base (7e7634f) 89.69% compared to head (7502f52) 89.53%.

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Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1410      +/-   ##
===========================================
- Coverage    89.69%   89.53%   -0.16%     
===========================================
  Files          194      194              
  Lines         6260     6327      +67     
===========================================
+ Hits          5615     5665      +50     
- Misses         645      662      +17     

Flag	Coverage Δ
py3.8-ubuntu-22.04-pandas	89.53% <60.27%> (-0.16%)	⬇️

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Files Changed	Coverage Δ
src/ydata_profiling/model/pandas/utils_pandas.py	54.54% <17.64%> (-39.21%)	⬇️
..._profiling/model/pandas/timeseries_index_pandas.py	89.47% <50.00%> (+13.28%)	⬆️
src/ydata_profiling/visualisation/plot.py	79.72% <59.09%> (+0.79%)	⬆️
...ofiling/model/pandas/describe_timeseries_pandas.py	90.42% <81.81%> (-2.64%)	⬇️
...ng/report/structure/variables/render_timeseries.py	92.30% <90.00%> (-1.03%)	⬇️

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