Add item value variable

[Der-Henning]

Pull Request Checklist

• Have you checked to ensure there aren't other open
  Pull Requests for the same update/change?
• Did you make your Pull Request on the dev branch?
• Does your submission pass tests? make test
• Have you lint your code locally prior to submission? make lint
• Could you build and run the docker image successfully? make image
• Could you create a running executable? make executable
• Have you added an explanation of what your changes do
  and why you'd like to include them?
• Have you written new tests for your changes, as applicable?
• Have you successfully ran manual tests with your changes locally?

[codecov]

Codecov Report

Attention: 7 lines in your changes are missing coverage. Please review.

Comparison is base (fd03a24) 64.71% compared to head (76ed6b1) 64.75%.
Report is 3 commits behind head on main.

Files	Patch %	Lines
tgtg_scanner/models/metrics.py	33.33%	6 Missing ⚠️
tgtg_scanner/scanner.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #437      +/-   ##
==========================================
+ Coverage   64.71%   64.75%   +0.03%     
==========================================
  Files          26       26              
  Lines        2202     2210       +8     
==========================================
+ Hits         1425     1431       +6     
- Misses        777      779       +2     

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