feat: New command: pdm new

[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]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.58%. Comparing base (c851a70) to head (29b6615).
Report is 68 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3462      +/-   ##
==========================================
+ Coverage   85.57%   85.58%   +0.01%     
==========================================
  Files         112      113       +1     
  Lines       11567    11580      +13     
  Branches     2540     2540              
==========================================
+ Hits         9898     9911      +13     
  Misses       1138     1138              
  Partials      531      531              

Flag	Coverage Δ
unittests	85.38% <100.00%> (+0.01%)	⬆️

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[drunkwcodes]

Is pdm init still recommended to use?

[frostming]

Is pdm init still recommended to use?

Yes, the difference is from an existing project or a new project