Remove Initiate completely from MobiusLoop

[JensAyton]

Initiation is a MobiusController concern.

Note behaviour change: MobiusLoop no longer triggers initiate logs.

@jeppes

[codecov]

Codecov Report

Merging #146 into master will decrease coverage by 0.07%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #146      +/-   ##
==========================================
- Coverage   93.27%   93.20%   -0.08%     
==========================================
  Files          44       44              
  Lines        1309     1295      -14     
==========================================
- Hits         1221     1207      -14     
  Misses         88       88              

Flag	Coverage Δ
#ios	93.20% <100.00%> (-0.08%)	⬇️

Impacted Files	Coverage Δ
MobiusCore/Source/MobiusLogger.swift	82.60% <ø> (ø)
MobiusCore/Source/EventProcessor.swift	97.43% <100.00%> (ø)
MobiusCore/Source/Mobius.swift	90.14% <100.00%> (-2.17%)	⬇️
MobiusCore/Source/MobiusController.swift	98.67% <100.00%> (+0.06%)	⬆️
MobiusCore/Source/MobiusLoop.swift	100.00% <100.00%> (ø)

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