added Arena appliances for fights on a separate server

local.gradle.example

@@ -22,3 +22,14 @@ tasks.register('deployCraftAttackPlugin', Copy) {
     into file('path') // path to plugins folder
     rename { fileName -> "craftattack.jar" }
 }
+
+tasks.register("uploadArenaPlugin") {
+    dependsOn(":arena:shadowJar")
+
+    doLast {
+        def jarFile = project(":arena").tasks.named("shadowJar").get().outputs.files.singleFile
+        providers.exec {
+            commandLine "scp", "-4", "-P", "22", jarFile.absolutePath, "user@host:path/arena.jar"
+        }.result.get()
+    }
+}