Adopt swift-format

[fpseverino]

Shamelessly copied from vapor/jwt-kit#198

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (49d60c7) to head (f77414a).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #21   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            9         9           
  Lines          137       140    +3     
=========================================
+ Hits           137       140    +3     

Files with missing lines	Coverage Δ
...endGridKit/Models/AdvancedSuppressionManager.swift	100.00% <ø> (ø)
Sources/SendGridKit/Models/EmailAddress.swift	100.00% <ø> (ø)
Sources/SendGridKit/Models/EmailAttachment.swift	100.00% <ø> (ø)
Sources/SendGridKit/Models/EmailContent.swift	100.00% <ø> (ø)
Sources/SendGridKit/Models/MailSettings.swift	100.00% <ø> (ø)
Sources/SendGridKit/Models/Personalization.swift	100.00% <ø> (ø)
Sources/SendGridKit/Models/SendGridEmail.swift	100.00% <ø> (ø)
Sources/SendGridKit/Models/TrackingSettings.swift	100.00% <ø> (ø)
Sources/SendGridKit/SendGridClient.swift	100.00% <100.00%> (ø)