configure gradle build and java toolchain

gradle.properties

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+# The current version of your project. Please use semantic versioning!
+version=1.1.0
+
+# The group ID used for maven publishing. Usually the same as your package name
+# but not the same as your plugin group!
+maven_group=xyz.quickbasic
+
+# The version of Java used by your plugin. The game is built on Java 21 but
+# actually runs on Java 25.
+java_version=25
+
+# Determines if your plugin should also be loaded as an asset pack. If your
+# pack contains assets, or you intend to use the in-game asset editor, you
+# want this to be true.
+includes_pack=true
+
+# The release channel your plugin should be built and ran against. This is
+# usually release or pre-release. You can verify your settings in the
+# official launcher.
+patchline=release
+
+# Determines if the development server should also load mods from the user's
+# standard mods folder. This lets you test mods by installing them where a
+# normal player would, instead of adding them as dependencies or adding them
+# to the development server manually.
+load_user_mods=false