Add option --pypi-url option

[marcelotrevisani]

Add cli option to change the url that grayskull will remover the pypi metadata

[marcelotrevisani]

Partially solves #204

[codecov-commenter]

Codecov Report

Merging #274 (02f0da5) into main (9c3242e) will decrease coverage by 3.62%.
The diff coverage is 88.43%.

@@            Coverage Diff             @@
##             main     #274      +/-   ##
==========================================
- Coverage   91.30%   87.68%   -3.63%     
==========================================
  Files          17       16       -1     
  Lines        1576     1364     -212     
==========================================
- Hits         1439     1196     -243     
- Misses        137      168      +31     

Flag	Coverage Δ
unittests	87.68% <88.43%> (-3.63%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
grayskull/cli/stdout.py	80.30% <ø> (ø)
setup.py	0.00% <0.00%> (ø)
grayskull/base/github.py	30.18% <30.18%> (ø)
grayskull/utils.py	85.81% <80.55%> (-14.19%)	⬇️
grayskull/strategy/abstract_strategy.py	83.33% <83.33%> (ø)
grayskull/base/pkg_info.py	85.71% <87.50%> (+0.52%)	⬆️
grayskull/strategy/py_base.py	94.07% <94.07%> (ø)
grayskull/strategy/pypi.py	95.51% <95.51%> (ø)
grayskull/config.py	97.61% <97.61%> (ø)
grayskull/__main__.py	98.43% <100.00%> (+0.28%)	⬆️
... and 4 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 04d046a...02f0da5. Read the comment docs.