feat(Crypto List): Refreshable crypto list

[josetorronteras]

CHANGELOG

• Add error alert
• Add loading view
• Add refresh list

[codecov]

Codecov Report

Attention: Patch coverage is 68.96552% with 9 lines in your changes missing coverage. Please review.

Project coverage is 91.55%. Comparing base (2ea3ba6) to head (df5dbbd).

Files	Patch %	Lines
CryptoWidgetKitApp/ContentView.swift	55.55%	8 Missing ⚠️
...ryptoWidgetKitApp/ViewModels/CryptoViewModel.swift	90.90%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #4      +/-   ##
==========================================
- Coverage   96.82%   91.55%   -5.27%     
==========================================
  Files          10       10              
  Lines         126      154      +28     
==========================================
+ Hits          122      141      +19     
- Misses          4       13       +9     

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