bump gradle wrapper to 8.14.2 and switch to kotlin dsl (#1203)

settings.gradle.kts

@@ -0,0 +1,41 @@
+/*
+ * Iris is a World Generator for Minecraft Bukkit Servers
+ * Copyright (c) 2021 Arcane Arts (Volmit Software)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+pluginManagement {
+    repositories {
+        mavenLocal()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+plugins {
+    id ("org.gradle.toolchains.foojay-resolver-convention") version "1.0.0"
+}
+
+rootProject.name = "Iris"
+
+include(":core")
+include(
+        ":nms:v1_21_R4",
+        ":nms:v1_21_R3",
+        ":nms:v1_21_R2",
+        ":nms:v1_21_R1",
+        ":nms:v1_20_R4",
+        ":nms:v1_20_R3",
+        ":nms:v1_20_R2",
+        ":nms:v1_20_R1",
+)