Feature/fbp 261 camunda plugin

[valb3r]

Fixes #261

TODOs:

• [x] Basic implementation
• [x] New element: task
• [x] New element: sendTask
• [x] New element: complexGateway
• [x] New element: intermediateCatchEvent.link
• [x] outgoing/incoming sequence refs within elements
• • [x] cascade attach/detach
• • [x] cascade new edge created
• • [x] cascade edge id change
• • [x] cascade edge removal
• • [x] UI tests (light) with cascade cases

[codecov-commenter]

Codecov Report

Merging #265 (3681498) into master (98acb0d) will increase coverage by 0.83%. The diff coverage is 64.93%.

@@             Coverage Diff              @@
##             master     #265      +/-   ##
============================================
+ Coverage     61.27%   62.11%   +0.83%     
- Complexity      997     1278     +281     
============================================
  Files           136      181      +45     
  Lines          4925     5931    +1006     
  Branches        692      792     +100     
============================================
+ Hits           3018     3684     +666     
- Misses         1675     1997     +322     
- Partials        232      250      +18     

Flag	Coverage Δ
unittests	62.11% <64.93%> (+0.83%)	:arrow_up:

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

Impacted Files	Coverage Δ
.../valb3r/bpmn/intellij/plugin/core/render/Canvas.kt	61.36% <0.00%> (ø)
...j/plugin/core/render/DefaultBpmnProcessRenderer.kt	68.88% <0.00%> (-0.35%)	:arrow_down:
...r/bpmn/intellij/plugin/core/render/IconProvider.kt	0.00% <0.00%> (ø)
...ore/render/elements/edges/BaseEdgeRenderElement.kt	70.42% <0.00%> (ø)
...ugin/camunda/CamundaBpmnPluginToolWindowFactory.kt	0.00% <0.00%> (ø)
...munda/CamundaBpmnPluginToolWindowProjectService.kt	0.00% <0.00%> (ø)
.../intellij/plugin/camunda/CamundaPluginPreloaded.kt	0.00% <0.00%> (ø)
...nda/actions/AttachCamundaBpmnDebuggerToDbAction.kt	0.00% <0.00%> (ø)
...lij/plugin/camunda/actions/NewCamundaBpmnAction.kt	0.00% <0.00%> (ø)
...in/camunda/actions/ViewCamundaBpmnDiagramAction.kt	0.00% <0.00%> (ø)
... and 52 more

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