Adjust CI config to new CI

Signed-off-by: Lixfel <agga-games@gmx.de>

steamwarci.yml

@@ -1,7 +1,9 @@
-build:
+setup:
   - "ln -s /home/gitea/lib"
-  - "cp ~/gradle.properties ."
+
+build:
   - "./gradlew buildProject"
+  - "./gradlew --stop"
 
 artifacts:
   "/binarys/schematicsystem.jar": "build/libs/schematicsystem.jar"