Moved logging, and removed old supportyaml model; modified tests.

[adedamola-sode]

1. moved logging from main_app.py to main.py
2. removed old techui-support mapping model from models.py, and changed schema generation from the old one
3. adjusted model tests

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.09%. Comparing base (bcf6738) to head (9eed13e).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #235      +/-   ##
==========================================
- Coverage   96.25%   96.09%   -0.17%     
==========================================
  Files          13       13              
  Lines         962      948      -14     
==========================================
- Hits          926      911      -15     
- Misses         36       37       +1     

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