SWF Editor - (Apache) Remove Patternfly files from stunner source code

The goal of this task is to remove Patternfly files from stunner source code.

Isntead of having the Patternfly CSS/JS files in stunner source code, those files shall be unpacked from a dependency declared in the POM of the project during the build process then they shall be moved to the places they are required in the target folder. This way when the jar is created, those files will be packed together.

Files removed from the source code:

• patternfly.min.css
• patternfly-additions.min.css
• bootstrap-select.min.css
• uberfire-patternfly.css
• patternfly.min.js

How to test:

• Build stunner from command line mvn -T 8C clean install -DskipTests=true
• Check if the foder kie-wb-common-stunner/kie-wb-common-stunner-client/kie-wb-common-stunner-lienzo/target/uberfire-workbench-client-views-patternfly was created containing the content of the uberfire-patternfly
• Go to kie-wb-common-stunner/kie-wb-common-stunner-client/kie-wb-common-stunner-lienzo/target and check if the jar kie-wb-common-stunner-lienzo-0.0.0.jar contains the uberfire-patternfly files listed above in the path org/kie/workbench/common/stunner/client/lienzo/canvas/patternfly. (rename the jar file to .zip in order to unpack it)

Acceptance criteria

Patternfly is removed from source code.
All integration tests pass.
No regressions are introduced.