dev(narugo): add hf_site_info function to detect the hf site

[narugo1992]

from hfutils.meta import hf_site_info

print(hf_site_info())

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.90%. Comparing base (692872c) to head (e4ec30e).
⚠️ Report is 8 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #73      +/-   ##
==========================================
+ Coverage   87.78%   87.90%   +0.12%     
==========================================
  Files          64       66       +2     
  Lines        2301     2324      +23     
==========================================
+ Hits         2020     2043      +23     
  Misses        281      281              

Flag	Coverage Δ
unittests	87.90% <100.00%> (+0.12%)	⬆️

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