Migrates from maven to gradle for building and fixes the package names.

TODO.md

@@ -4,14 +4,14 @@
 - [ ] Update logger usage to use getLogger() from JavaPlugin
 - [ ] Remove or modernize any old/deprecated event registration (use @EventHandler and registerEvents)
 - [ ] Review and update player lookup logic to use getPlayerExact or handle case sensitivity
-- [ ] Ensure all commands are properly defined in plugin.yml
-- [ ] Initialize Gradle build system
-- [ ] Set project metadata in build.gradle
-- [ ] Add repositories and dependencies
-- [ ] Configure Java version
-- [ ] Ensure resource handling for plugin.yml
-- [ ] Add Gradle plugins as needed (e.g., Shadow)
-- [ ] Update .gitignore for Gradle
-- [ ] Remove Maven files
-- [ ] Update documentation and scripts
-- [ ] Test the Gradle build
+- [x] Ensure all commands are properly defined in plugin.yml
+- [x] Initialize Gradle build system
+- [x] Set project metadata in build.gradle
+- [x] Add repositories and dependencies
+- [x] Configure Java version
+- [x] Ensure resource handling for plugin.yml
+- [x] Add Gradle plugins as needed (e.g., Shadow)
+- [x] Update .gitignore for Gradle
+- [x] Remove Maven files
+- [x] Update documentation and scripts
+- [x] Test the Gradle build