feat: option to save static URLs in the lockfile

[frostming]

Signed-off-by: Frost Ming me@frostming.com

Pull Request Checklist

• A news fragment is added in news/ describing what is new.
• Test cases added for changed code.

Describe what you have changed in this PR.

[codecov-commenter]

Codecov Report

Patch coverage: 89.23% and project coverage change: -0.04 ⚠️

Comparison is base (f3641c2) 84.49% compared to head (badc62e) 84.46%.

❗ Your organization is not using the GitHub App Integration. As a result you may experience degraded service beginning May 15th. Please install the Github App Integration for your organization. Read more.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2101      +/-   ##
==========================================
- Coverage   84.49%   84.46%   -0.04%     
==========================================
  Files         100      100              
  Lines        9663     9669       +6     
  Branches     2118     2122       +4     
==========================================
+ Hits         8165     8167       +2     
- Misses       1038     1040       +2     
- Partials      460      462       +2     

Flag	Coverage Δ
unittests	84.23% <89.23%> (-0.04%)	⬇️

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

Impacted Files	Coverage Δ
src/pdm/_types.py	88.52% <ø> (ø)
src/pdm/utils.py	84.31% <66.66%> (ø)
src/pdm/project/core.py	89.92% <71.42%> (-0.57%)	⬇️
src/pdm/models/candidates.py	85.93% <83.33%> (-0.98%)	⬇️
src/pdm/models/repositories.py	73.17% <88.88%> (-0.37%)	⬇️
src/pdm/cli/utils.py	84.24% <93.33%> (+0.62%)	⬆️
src/pdm/cli/actions.py	77.22% <100.00%> (+0.46%)	⬆️
src/pdm/cli/commands/add.py	87.32% <100.00%> (ø)
src/pdm/cli/commands/lock.py	100.00% <100.00%> (ø)
src/pdm/cli/commands/update.py	91.42% <100.00%> (ø)
... and 3 more

☔ View full report in Codecov by Sentry.
📢 Do you have feedback about the report comment? Let us know in this issue.