made telegram commands private

[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 images successfully? make images
• 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: Patch coverage is 75.00000% with 7 lines in your changes are missing coverage. Please review.

Project coverage is 64.86%. Comparing base (da792df) to head (3af0885).
Report is 1 commits behind head on main.

❗ Current head 3af0885 differs from pull request most recent head a966bb9. Consider uploading reports for the commit a966bb9 to get more accurate results

Files	Patch %	Lines
tgtg_scanner/notifiers/telegram.py	75.00%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #471      +/-   ##
==========================================
+ Coverage   64.72%   64.86%   +0.13%     
==========================================
  Files          26       26              
  Lines        2251     2277      +26     
==========================================
+ Hits         1457     1477      +20     
- Misses        794      800       +6     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.