Add initial project setup and core functionality

This commit introduces the WebInterface plugin with core modules, including a login command, reload command, and event listener for player bans. Gradle build files, configuration management, and supporting scripts (gradlew) are also included to enable project setup and build automation.

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Sat May 03 02:13:55 CEST 2025
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.10-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists