fix: using extra-channels-strategy from category if exists

[vigenere23]

Closes #142

• fix: using extra-channels-strategy from category if exists
• fix: finding matching catgegory by category name instead of channel name
• chore: removed randomly pushed file

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (a565ab0) 85.72% compared to head (4ba4c1f) 85.71%.

Files	Patch %	Lines
disma/src/core/changes/channel.rs	92.30%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #143      +/-   ##
==========================================
- Coverage   85.72%   85.71%   -0.01%     
==========================================
  Files          66       66              
  Lines        5758     5763       +5     
==========================================
+ Hits         4936     4940       +4     
- Misses        822      823       +1     

Flag	Coverage Δ
disma	91.19% <92.30%> (-0.02%)	⬇️

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