add command line interface

[Yi-FanLi]

This PR adds a CLI for dpti. Also, setup.py is migrated to pyproject.toml.

[codecov]

Codecov Report

Attention: 323 lines in your changes are missing coverage. Please review.

Comparison is base (b719828) 37.89% compared to head (6d7fce5) 38.03%.

Files	Patch %	Lines
dpti/hti_ice.py	14.01%	92 Missing ⚠️
dpti/hti_water.py	16.66%	65 Missing ⚠️
dpti/ti_water.py	25.49%	38 Missing ⚠️
dpti/equi.py	25.00%	27 Missing ⚠️
dpti/main.py	0.00%	26 Missing ⚠️
dpti/ti.py	20.68%	23 Missing ⚠️
dpti/gdi.py	9.52%	19 Missing ⚠️
dpti/hti.py	17.39%	19 Missing ⚠️
dpti/hti_liq.py	22.22%	14 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##            devel      #33      +/-   ##
==========================================
+ Coverage   37.89%   38.03%   +0.14%     
==========================================
  Files          22       24       +2     
  Lines        5291     5366      +75     
==========================================
+ Hits         2005     2041      +36     
- Misses       3286     3325      +39     

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