#118 Introduce FragmentOperation API.

[tomaszmichalak]

Fix #118 .

Upgrade notes

We've moved FragmentContext and FragmentResult from knotx-fragments-engine-api to knotx-fragments-api so please update all imports from:

io.knotx.fragments.engine.api.node.single.FragmentContext
io.knotx.fragments.engine.api.node.single.FragmentResult

to:

io.knotx.fragments.api.FragmentContext
io.knotx.fragments.api.FragmentResult

Types of changes

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

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

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I hereby agree to the terms of the Knot.x Contributor License Agreement.

[codecov]

Codecov Report

Merging #119 into master will increase coverage by 0.28%.
The diff coverage is 100%.

@@             Coverage Diff              @@
##             master     #119      +/-   ##
============================================
+ Coverage     87.63%   87.91%   +0.28%     
+ Complexity     1420     1418       -2     
============================================
  Files           148      147       -1     
  Lines          6033     6034       +1     
  Branches        185      184       -1     
============================================
+ Hits           5287     5305      +18     
+ Misses          653      636      -17     
  Partials         93       93

Impacted Files	Coverage Δ	Complexity Δ
...st/java/io/knotx/fragments/engine/Transitions.java	100% <ø> (ø)	2 <0> (ø)	⬇️
...ction/http/response/EndpointResponseProcessor.java	92.98% <ø> (ø)	26 <0> (ø)	⬇️
...factory/node/subtasks/SubtasksNodeFactoryTest.java	98.86% <ø> (ø)	14 <0> (ø)	⬇️
...logging/InlinePayloadActionFactoryLoggingTest.java	88.88% <ø> (ø)	8 <0> (ø)	⬇️
...st/java/io/knotx/fragments/handler/TestAction.java	100% <ø> (ø)	4 <0> (ø)	⬇️
...nts/handler/action/PayloadToBodyActionFactory.java	85% <ø> (ø)	9 <0> (ø)	⬇️
.../fragments/handler/action/http/HttpActionTest.java	99.53% <ø> (ø)	68 <0> (ø)	⬇️
...main/java/io/knotx/fragments/handler/api/Knot.java	0% <ø> (ø)	0 <0> (ø)	⬇️
...gments/handler/action/InlineBodyActionFactory.java	95.83% <ø> (ø)	7 <0> (ø)	⬇️
...ndler/consumer/html/GraphNodeExecutionLogTest.java	100% <ø> (ø)	3 <0> (ø)	⬇️
... and 37 more

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