Added a few improvements for code structure

[NazarYavornytskyy]

@serhii-londar Please review and tell me if all is fine now

[crowdin-bot]

	Warnings
⚠️	Big PR, try to keep changes smaller if you can

Generated by 🚫 Danger Swift against 45d38be

[codecov]

Codecov Report

Merging #129 (45d38be) into master (9b3a766) will increase coverage by 0.03%.
The diff coverage is 71.43%.

@@            Coverage Diff             @@
##           master     #129      +/-   ##
==========================================
+ Coverage   49.69%   49.71%   +0.03%     
==========================================
  Files         122      122              
  Lines        4742     4738       -4     
==========================================
- Hits         2356     2355       -1     
+ Misses       2386     2383       -3     

Impacted Files	Coverage Δ
...CrowdinSDK/Utils/Attributes/AttributeFactory.swift	100.00% <ø> (ø)
...r/Operations/CrowdinStringsDownloadOperation.swift	68.75% <ø> (+10.86%)	⬆️
CrowdinSDK/Classes/CrowdinAPI/CrowdinAPI.swift	53.27% <50.00%> (ø)
...ContentDeliveryAPI/CrowdinContentDeliveryAPI.swift	56.31% <100.00%> (ø)
...SDK/Utils/Attributes/AttributedTextFormatter.swift	97.44% <100.00%> (ø)
...owdinSDK/Classes/Features/Logs/CrowdinAPILog.swift	70.59% <100.00%> (-0.84%)	⬇️

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