Align .gitignore with the other Apache Logging repositories (#505)

The file accumulated ad-hoc entries over the years.
Reorganize it into the same sections used by `logging-parent`
and the other Logging repositories, so the files are easy to
compare and keep in sync.

Assisted-By: Claude Fable 5.1 <noreply@anthropic.com>

Author: ppkarwasz

.gitignore

@@ -1,31 +1,53 @@
-# Lines that start with '#' are comments.
-*~
-*.diff
-*#
-.classpath
-.project
-.settings
-bin/flume-env.sh
-conf/flume-site.xml
-bin/.settings
-.eclipse
-pmd_report.html
-*/bin
-target
-patchprocess
-derby.log
-.idea
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Maven
+target/
+.flattened-pom.xml
+/.mvn/extensions.xml
+/.mvn/wrapper/maven-wrapper.jar
+.surefire-*
+
+# Node.js (used by `frontend-maven-plugin` in `logging-parent`)
+node/
+node_modules/
+package-lock.json
+
+# IntelliJ IDEA
+.idea/
 *.iml
+*.iws
+
+# Eclipse
+.project
+.classpath
+.settings/
+.factorypath
+/.metadata/
+.cache-main
+.cache-tests
+
+# Visual Studio Code
+.vscode/
+
+# NetBeans
 nb-configuration.xml
-.DS_Store
-/.mvn/wrapper/maven-wrapper.jar
-**/metastore_db
-# Flatten Maven Plugin
-.flattened-pom.xml
-# Maven extensions
-.mvn/extensions.xml
 
-# Node.js and dependencies
-/node_modules/
-/node/
+# Editor backup files
+*~
+*#
 
+# macOS
+.DS_Store