Improve protocols naming, usability and fix minor bugs

[sebastianvarela]

PR's key points

• First of all, fix publisher extension and pass expiration from .dispatch helper to the task. (this fix isRecentlySucceed use on KeyedCompletableTask
• Rename ServiceType to Service
• Rename TaskType to Taskable (This protocol is for type-erasure, not used directly)
• Remove StoreType (We use Store always directly)
• Rename StateType to State and remove isEqual function in order to use Equatable (more swiftly)
• Remove isEqual from Action protocol, not used really.
• Remove Middleware Not used
• Rename Service into Interceptor (we need Chain? :S)

How to review this PR?

• Check test and commit progression, we can talk these points.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +3.91 🎉

Comparison is base (2c734d2) 89.76% compared to head (b8dd169) 93.67%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #15      +/-   ##
==========================================
+ Coverage   89.76%   93.67%   +3.91%     
==========================================
  Files          38       38              
  Lines        2090     2009      -81     
==========================================
+ Hits         1876     1882       +6     
+ Misses        214      127      -87     

Flag	Coverage Δ
ios	93.52% <100.00%> (+3.76%)	⬆️
mac	93.67% <100.00%> (+3.91%)	⬆️
tv	93.52% <100.00%> (+3.76%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
Sources/Actions/Action.swift	100.00% <ø> (ø)
Sources/Chain.swift	100.00% <ø> (ø)
Sources/Task/TaskExpiration.swift	86.66% <ø> (ø)
Tests/Helpers/TestActions.swift	100.00% <ø> (+60.00%)	⬆️
Tests/Helpers/TestState.swift	100.00% <ø> (ø)
Tests/Helpers/TestStoreController.swift	75.00% <ø> (ø)
Sources/Dispatcher.swift	90.97% <100.00%> (+12.26%)	⬆️
...shers/PublisherExtensions+CompletableActions.swift	100.00% <100.00%> (ø)
.../Publishers/Publishers.CombineMiniTasksArray.swift	97.50% <100.00%> (ø)
...Publishers/Publishers.CombineMiniTasksTuple2.swift	98.03% <100.00%> (ø)
... and 11 more

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[ThorBot]

	1 Warning
⚠️	Big PR, try to keep changes smaller if you can 😜

	2 Messages
📖	⌛️ [output] Slowest test: test_success_task_with_expiration_setted took 3.011 seconds
📖	⌛️ [output] Slowest test: test_success_task_with_expiration_setted took 3.006 seconds

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