Selenium extension

[toschneck]

• enable as alternative web-test-framework selenium
• Make possible to extend existing Selenium tests
• Maybe refactor in this step also the Java DSL

[toschneck]

TODOs:

• Check testcase actions
• Talk about packagename maybe something like sakuli-test-runner
• Check error message on linux when e.g. wmctrl is missing, see https://github.com/RaiMan/SikuliX-2014/issues/253
• Check error:

java.lang.AssertionError: cannot resolve the folder path of the current testcase 'null'
        at org.sakuli.actions.testcase.AbstractTestCaseActionImpl.getTestCaseFolderPath(AbstractTestCaseActionImpl.java:119)
        at org.sakuli.example.uiOnly.OsNativeTest.checkEnvirionment(OsNativeTest.java:50)
        at org.sakuli.example.uiOnly.OsNativeTest.setUp(OsNativeTest.java:38)

• Refactor the sahi-based-java-dsl in the same way or xtend from this one
• Write documentation
• Update Example after merge to dev: https://github.com/ConSol/sakuli-examples/tree/feature/sakuli-se
• add Junit5 Support: https://www.heise.de/developer/meldung/JUnit-5-setzt-auf-Java-8-und-verbessert-die-Anbindung-von-Erweiterungen-3828546.html
• Write blog at labs.consol.de and maybe https://www.guru99.com/selenium-tutorial.html