Add Maven publishing for MobArenaStats' local build dependency

build.gradle.kts

@@ -1,6 +1,7 @@
 plugins {
     id("java-library")
     id("com.gradleup.shadow") version "9.6.1"
+    id("maven-publish")
 }
 
 group = "com.garbagemule"
@@ -71,6 +72,17 @@ tasks {
     // Let the build task produce the final artifact.
     build { dependsOn(shadowJar) }
 }
+
+publishing {
+    publications {
+        create<MavenPublication>("shadow") {
+            groupId = "com.garbagemule"
+            artifactId = "MobArena"
+            version = project.version.toString()
+            artifact(tasks.shadowJar)
+        }
+    }
+}
 val checkNoLegacyMaterialApi = tasks.register("checkNoLegacyMaterialApi") {
     group = "verification"
     description = "Fails if legacy Bukkit material access returns to production sources."