fix(tutorial, verbosity setter): fixed tutorial model name and verbosity setter (#2182)

[scottrp]

Tutorial01's name was too long for MODFLOW. Additionally, it did not define a top and botm.

Added a verbosity setter that automatically converts numerical verbosity values to the verbosity enumeration value, so that interval values are kept consistent.

[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 70.1%. Comparing base (029a4e1) to head (aa05503).
Report is 20 commits behind head on develop.

Additional details and impacted files

@@            Coverage Diff            @@
##           develop   #2193     +/-   ##
=========================================
+ Coverage     68.3%   70.1%   +1.7%     
=========================================
  Files          260     261      +1     
  Lines        57947   58232    +285     
=========================================
+ Hits         39611   40829   +1218     
+ Misses       18336   17403    -933     

Files	Coverage Δ
flopy/mf6/mfsimbase.py	61.8% <80.0%> (-0.7%)	⬇️

... and 179 files with indirect coverage changes