Adds Google Analytics integration

[0xTim]

Simply pass in through config

TODO:

• README

[codecov]

Codecov Report

Merging #21 into master will increase coverage by 0.18%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #21      +/-   ##
==========================================
+ Coverage    77.3%   77.48%   +0.18%     
==========================================
  Files          14       14              
  Lines        1445     1448       +3     
==========================================
+ Hits         1117     1122       +5     
+ Misses        328      326       -2

Impacted Files	Coverage Δ
Sources/SteamPress/Views/LeafViewFactory.swift	98.74% <100%> (+0.01%)	⬆️
Sources/SteamPress/Provider.swift	67.03% <100%> (+1.09%)	⬆️

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