chore(BUX-298): refactor sync method and use go-b t structures in BEEF implementation

[pawellewandowski98]

Pull Request Checklist

• 📖 I created my PR using provided : CODE_STANDARDS
• 📖 I have read the short Code of Conduct: CODE_OF_CONDUCT
• 🏠 I tested my changes locally.
• ✅ I have provided tests for my changes.
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[dorzepowski]

Why this is commented out?

[arkadiuszos4chain]

Because we do not have access to private fields from bt, so it's not trivali to create reliable tests for this here in bux.

[dorzepowski]

then we should remove this test entirely and have a good tests on an upper level.

[arkadiuszos4chain]

I was able to write tests for these

[codecov]

Codecov Report

Merging #438 (5788912) into master (27d80ad) will decrease coverage by 0.19%.
Report is 3 commits behind head on master.
The diff coverage is 48.07%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #438      +/-   ##
==========================================
- Coverage   52.65%   52.46%   -0.19%     
==========================================
  Files          96       96              
  Lines       10703    10732      +29     
==========================================
- Hits         5636     5631       -5     
- Misses       4626     4660      +34     
  Partials      441      441              

Flag	Coverage Δ
unittests	52.46% <48.07%> (-0.19%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
beef_tx_sorting.go	100.00% <100.00%> (ø)
beef_tx_bytes.go	78.33% <83.33%> (+3.73%)	⬆️
beef_tx.go	54.66% <46.15%> (-10.13%)	⬇️
model_sync_transactions.go	20.65% <0.00%> (-0.40%)	⬇️

... and 1 file with indirect coverage changes

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