Add new decoration property to enable/disable failed icon for a messa…

[turbulem]

Add new decoration property to enable/disable failed icon for a message. Change names for the ChatItemDecorationAttributes properties according to the single name convention. Add tests to cover new functionality.

Changes breaks existing interfaces for ChatItemDecorationAttributes and amend MessageViewModelProtocol with new writable property.

[codecov-io]

Codecov Report

Merging #359 into master will increase coverage by 0.02%.
The diff coverage is 93.33%.

@@            Coverage Diff            @@
##           master    #359      +/-   ##
=========================================
+ Coverage   63.87%   63.9%   +0.02%     
=========================================
  Files          63      63              
  Lines        3563    3571       +8     
=========================================
+ Hits         2276    2282       +6     
- Misses       1287    1289       +2

Impacted Files	Coverage Δ
.../Chat Items/BaseMessage/BaseMessagePresenter.swift	60.91% <100%> (+0.45%)	⬆️
.../Chat Items/BaseMessage/BaseMessageViewModel.swift	86.2% <100%> (+1.02%)	⬆️
...urce/Chat Items/ChatItemDecorationAttributes.swift	100% <100%> (ø)	⬆️
...eMessage/Views/BaseMessageCollectionViewCell.swift	52.07% <75%> (+0.44%)	⬆️
...Chat Items/TextMessages/Views/TextBubbleView.swift	68.75% <0%> (-1.14%)	⬇️

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