feat: New option --venv VENV to run a command in the venv with the given name

[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.

Close #1705

[codecov-commenter]

Codecov Report

Patch coverage: 88.88% and project coverage change: +0.05 🎉

Comparison is base (2963f2b) 84.92% compared to head (fda0efa) 84.98%.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1820      +/-   ##
==========================================
+ Coverage   84.92%   84.98%   +0.05%     
==========================================
  Files          99       99              
  Lines        8999     9028      +29     
  Branches     1954     1953       -1     
==========================================
+ Hits         7642     7672      +30     
- Misses        927      928       +1     
+ Partials      430      428       -2     

Flag	Coverage Δ
unittests	84.80% <88.88%> (+0.06%)	⬆️

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

Impacted Files	Coverage Δ
src/pdm/cli/commands/add.py	88.88% <ø> (ø)
src/pdm/cli/commands/sync.py	100.00% <ø> (ø)
src/pdm/cli/commands/update.py	100.00% <ø> (ø)
src/pdm/cli/commands/venv/activate.py	92.30% <60.00%> (-4.13%)	⬇️
src/pdm/cli/commands/venv/remove.py	86.36% <62.50%> (-2.10%)	⬇️
src/pdm/cli/commands/venv/__init__.py	80.55% <66.66%> (-2.78%)	⬇️
src/pdm/cli/options.py	92.03% <82.60%> (-1.78%)	⬇️
src/pdm/cli/actions.py	77.77% <100.00%> (+0.19%)	⬆️
src/pdm/cli/commands/info.py	93.54% <100.00%> (+0.21%)	⬆️
src/pdm/cli/commands/install.py	89.28% <100.00%> (ø)
... and 9 more

... and 1 file with indirect coverage changes

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