Ny gitignore

ny gitignore for å ignorere target fil og for cross utvikling over flere IDE-er

.gitignore

@@ -1,3 +1,4 @@
+# ===== Maven =====
 target/
 pom.xml.tag
 pom.xml.releaseBackup
@@ -7,11 +8,49 @@ release.properties
 dependency-reduced-pom.xml
 buildNumber.properties
 .mvn/timing.properties
-# https://github.com/takari/maven-wrapper#usage-without-binary-jar
-.mvn/wrapper/maven-wrapper.jar
 
-# Eclipse m2e generated files
-# Eclipse Core
+# ===== Java =====
+*.class
+*.log
+*.ctxt
+
+# ===== Package Files =====
+*.jar
+*.war
+*.ear
+
+# ===== IDE: IntelliJ =====
+.idea/
+*.iml
+*.iws
+out/
+
+# ===== IDE: Eclipse =====
 .project
-# JDT-specific (Eclipse Java Development Tools)
 .classpath
+.settings/
+bin/
+
+# ===== IDE: VS Code =====
+.vscode/
+
+# ===== OS Files =====
+.DS_Store
+Thumbs.db
+
+# ===== Logs =====
+logs/
+*.log
+
+# ===== Temporary files =====
+*.tmp
+*.swp
+*.swo
+
+# ===== Test output =====
+surefire-reports/
+failsafe-reports/
+
+# ===== Coverage tools =====
+coverage/
+jacoco.exec