Feature/upcoming features

[roanutil]

• Enable all upcoming swift features
• Fix build errors for missing any on existential
• Add Hashable and Sendable conformances to HTTPMethod and ContentType
• Run swiftformat

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (16abd6d) 72.50% compared to head (d33158d) 72.67%.

Files	Patch %	Lines
Sources/NetworkService/Result+NetworkService.swift	66.66%	1 Missing ⚠️
Sources/NetworkService/URLRequest+HTTPHeader.swift	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #15      +/-   ##
==========================================
+ Coverage   72.50%   72.67%   +0.16%     
==========================================
  Files          27       27              
  Lines         662      666       +4     
==========================================
+ Hits          480      484       +4     
  Misses        182      182              

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