Feature/204/screen find image needles (#319)

* (#204) Enabled passing of Image data to Screen#find

* (#204) Updated screen tests

* (#204) Removed plugin test from main repo

* (#204) Removed plugin test from Docker test runs

* (#204) Introduced additional id property to images

* (#204) Adjusted tests and image usage to new id property

* (#204) Added helper function to make loading image resources easier

* (#204) Adapted toShow matcher to new find parameters

* (#204) Re-use loadImageResource function

Author: s1hofmann

.build/build.sh

@@ -23,5 +23,4 @@ echo "Installing node version $nodeVersion"
 nvm install $nodeVersion
 
 npm ci
-npm --prefix e2e/plugin-test ci
 E2E_TEST=1 npm run coverage -- --coverageDirectory=coverage/e2e