Handle list of models, dict with model values, and existing dict

[timkpaine]

No description provided.

[github-actions]

Test Results

9 tests  ±0   9 ✅ ±0   0s ⏱️ ±0s
1 suites ±0   0 💤 ±0 
1 files   ±0   0 ❌ ±0 

Results for commit 7a14cff. ± Comparison against base commit 953cd57.

[codecov]

Codecov Report

❌ Patch coverage is 72.38095% with 29 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.91%. Comparing base (63e8672) to head (7a14cff).
⚠️ Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
hatch_build/cli.py	69.79%	16 Missing and 13 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #14      +/-   ##
==========================================
- Coverage   86.84%   83.91%   -2.93%     
==========================================
  Files           5        5              
  Lines         266      342      +76     
  Branches       32       55      +23     
==========================================
+ Hits          231      287      +56     
- Misses         22       33      +11     
- Partials       13       22       +9     

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