Add ability to have a _target_ return a simple config type that is used elsewhere via interpolation

[ptomecek]

No description provided.

[github-actions]

Test Results

474 tests  +1   470 ✅ +1   39s ⏱️ ±0s
  1 suites ±0     4 💤 ±0 
  1 files   ±0     0 ❌ ±0 

Results for commit 0f9e00f. ± Comparison against base commit fd84d5f.

[codecov]

Codecov Report

❌ Patch coverage is 88.88889% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 95.26%. Comparing base (fd84d5f) to head (0f9e00f).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
ccflow/base.py	75.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #158      +/-   ##
==========================================
- Coverage   95.28%   95.26%   -0.02%     
==========================================
  Files         130      130              
  Lines        7614     7631      +17     
  Branches      499      500       +1     
==========================================
+ Hits         7255     7270      +15     
- Misses        243      245       +2     
  Partials      116      116              

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