OZG-3961 move user files so spezific folder; adjust JenkinsFile

goofy-client/apps/goofy-e2e/Jenkinsfile

.../apps/goofy-e2e/src/fixtures/user-main/user_dorothea.json

...t/apps/goofy-e2e/src/fixtures/user-main/user_kfinder.json

...t/apps/goofy-e2e/src/fixtures/user-main/user_kordner.json

...nt/apps/goofy-e2e/src/fixtures/user-main/user_ludwig.json

...ent/apps/goofy-e2e/src/fixtures/user-main/user_peter.json

...t/apps/goofy-e2e/src/fixtures/user-main/user_richard.json

...nt/apps/goofy-e2e/src/fixtures/user-main/user_sabine.json

...ient/apps/goofy-e2e/src/fixtures/user-main/user_zonk.json

goofy-client/apps/goofy-e2e/src/fixtures/user/user_emil.json

goofy-client/apps/goofy-e2e/src/support/user-util.ts