refactor(pathline/endpoint plots): support recarray or dataframe

[wpbonelli]

• Accept single or list of recarray or dataframe inPlotMapView and PlotCrossSection particle track plotting methods
  • plot_pathline()
  • plot_timeseries()
  • plot_endpoint()
• Update plot tests
• Tidy doc strings

[codecov]

Codecov Report

Merging #1888 (27958f5) into develop (7931112) will decrease coverage by 1.8%.
Report is 2 commits behind head on develop.
The diff coverage is 94.7%.

@@            Coverage Diff            @@
##           develop   #1888     +/-   ##
=========================================
- Coverage     72.2%   70.5%   -1.8%     
=========================================
  Files          257     257             
  Lines        56508   56506      -2     
=========================================
- Hits         40841   39837   -1004     
- Misses       15667   16669   +1002     

Files Changed	Coverage Δ
flopy/utils/utl_import.py	68.1% <ø> (ø)
flopy/utils/sfroutputfile.py	76.6% <75.0%> (+1.2%)	⬆️
flopy/export/metadata.py	23.3% <100.0%> (+0.8%)	⬆️
flopy/mf6/utils/binaryfile_utils.py	10.6% <100.0%> (+0.4%)	⬆️
flopy/mf6/utils/mfobservation.py	13.5% <100.0%> (+0.4%)	⬆️
flopy/modflow/mfsfr2.py	87.5% <100.0%> (+<0.1%)	⬆️
flopy/modpath/mp6sim.py	84.1% <100.0%> (ø)
flopy/plot/crosssection.py	66.9% <100.0%> (+0.5%)	⬆️
flopy/plot/map.py	84.0% <100.0%> (+<0.1%)	⬆️
flopy/utils/flopy_io.py	75.4% <100.0%> (ø)
... and 5 more

... and 55 files with indirect coverage changes