switch to kotlin dsl & fix build on gradle 9

build.gradle.kts

@@ -0,0 +1,70 @@
+plugins {
+  id("java")
+  id("eclipse")
+  id("org.jetbrains.gradle.plugin.idea-ext") version "1.1.8"
+  id("com.gradleup.shadow") version "9.3.0"
+  id("xyz.jpenilla.run-velocity") version "2.3.1"
+}
+
+group = "dev.colbster937"
+version = "1.1.3"
+description = "A reimplementation of OriginBlacklist for EaglerXServer"
+
+val targetJavaVersion = 17
+
+repositories {
+  mavenCentral()
+  maven("https://repo.papermc.io/repository/maven-public/")
+  maven("https://oss.sonatype.org/content/groups/public/")
+  maven("https://hub.spigotmc.org/nexus/content/repositories/public/")
+  maven("https://repo.md-5.net/content/repositories/releases/")
+  maven("https://repo.aikar.co/nexus/content/groups/aikar/")
+  maven("https://repo.lax1dude.net/repository/releases/")
+}
+
+dependencies {
+  compileOnly("com.velocitypowered:velocity-api:3.4.0-SNAPSHOT")
+  annotationProcessor("com.velocitypowered:velocity-api:3.4.0-SNAPSHOT")
+  compileOnly("org.bukkit:bukkit:1.8-R0.1-SNAPSHOT")
+  compileOnly("net.md-5:bungeecord-api:1.8-SNAPSHOT")
+  compileOnly("net.lax1dude.eaglercraft.backend:api-velocity:1.0.0")
+  compileOnly("net.lax1dude.eaglercraft.backend:api-bungee:1.0.0")
+  compileOnly("net.lax1dude.eaglercraft.backend:api-bukkit:1.0.0")
+  implementation("org.yaml:snakeyaml:2.2")
+  implementation("net.kyori:adventure-text-serializer-legacy:4.20.0")
+  implementation("net.kyori:adventure-text-minimessage:4.20.0")
+  implementation("com.github.seancfoley:ipaddress:5.3.4")
+}
+
+tasks {
+  named<xyz.jpenilla.runvelocity.task.RunVelocity>("runVelocity") {
+    velocityVersion("3.4.0-SNAPSHOT")
+  }
+}
+
+java {
+  toolchain.languageVersion.set(JavaLanguageVersion.of(targetJavaVersion))
+}
+
+tasks.processResources {
+  filesMatching(listOf("plugin.yml", "bungee.yml", "velocity-plugin.json", "Base.java")) {
+    expand(
+      mapOf(
+        "version" to project.version,
+        "description" to project.description
+      )
+    )
+  }
+}
+
+tasks.shadowJar {
+  relocate("org.yaml.snakeyaml", "dev.colbster937.shaded.snakeyaml")
+  relocate("inet.ipaddr", "dev.colbster937.shaded.ipaddr")
+  archiveVersion.set("")
+  archiveClassifier.set("")
+}
+
+tasks.withType<JavaCompile>().configureEach {
+  options.encoding = "UTF-8"
+  options.release.set(targetJavaVersion)
+}