#189 Improve ActionProvider's constructor

[marcinus]

Description

Changes Supplier<Iterator<ActionFactory>> constructor argument type to Supplier<Iterable<ActionFactory>> as it simplifies usage.

Motivation and Context

Closes #189

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• [x] I have read the CONTRIBUTING document.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.

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[codecov[bot]]

Codecov Report

Merging #195 into master will not change coverage. The diff coverage is 100.00%.

@@            Coverage Diff            @@
##             master     #195   +/-   ##
=========================================
  Coverage     91.96%   91.96%           
- Complexity     1873     1878    +5     
=========================================
  Files           179      179           
  Lines          7359     7359           
  Branches        183      183           
=========================================
  Hits           6768     6768           
  Misses          501      501           
  Partials         90       90           

Impacted Files	Coverage Δ	Complexity Δ
...io/knotx/fragments/action/core/ActionProvider.java	100.00% <100.00%> (ø)	14.00 <1.00> (ø)
...notx/fragments/action/core/ActionProviderTest.java	97.77% <100.00%> (ø)	16.00 <7.00> (+5.00)
...factory/generic/node/action/ActionNodeFactory.java	100.00% <100.00%> (ø)	7.00 <1.00> (ø)

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