Add Neoforge and upgrade template

Forge is not working but I can't really do anything about it

build.gradle

@@ -1,40 +1,28 @@
 plugins {
-    id "architectury-plugin" version "3.4-SNAPSHOT"
-    id "dev.architectury.loom" version "1.6-SNAPSHOT" apply false
+    id 'dev.architectury.loom' version '1.6-SNAPSHOT' apply false
+    id 'architectury-plugin' version '3.4-SNAPSHOT'
+    id 'com.github.johnrengelman.shadow' version '8.1.1' apply false
 }
 
 architectury {
-    minecraft = rootProject.minecraft_version
-}
-
-subprojects {
-    apply plugin: "dev.architectury.loom"
-
-    loom {
-        silentMojangMappingsLicense()
-    }
-
-    dependencies {
-        minecraft "com.mojang:minecraft:${rootProject.minecraft_version}"
-        // The following line declares the mojmap mappings, you may use other mappings as well
-        mappings loom.officialMojangMappings()
-        // The following line declares the yarn mappings you may select this one as well.
-        // mappings "net.fabricmc:yarn:1.20.1+build.10:v2"
-    }
+    minecraft = project.minecraft_version
 }
 
 allprojects {
-    apply plugin: "java"
-    apply plugin: "architectury-plugin"
-    apply plugin: "maven-publish"
+    group = rootProject.maven_group
+    version = rootProject.mod_version
+}
+
+subprojects {
+    apply plugin: 'dev.architectury.loom'
+    apply plugin: 'architectury-plugin'
+    apply plugin: 'maven-publish'
 
     base {
-        archivesName = rootProject.archives_base_name
+        // Set up a suffixed format for the mod jar names, e.g. `example-fabric`.
+        archivesName = "$rootProject.archives_name-$project.name"
     }
 
-    version = rootProject.mod_version
-    group = rootProject.maven_group
-
     repositories {
         // Add repositories to retrieve artifacts from in here.
         // You should only use this when depending on other mods because
@@ -43,12 +31,40 @@ allprojects {
         // for more information about repositories.
     }
 
-    tasks.withType(JavaCompile) {
-        options.encoding = "UTF-8"
-        options.release = 17
+    dependencies {
+        minecraft "net.minecraft:minecraft:$rootProject.minecraft_version"
+        mappings loom.officialMojangMappings()
     }
 
     java {
+        // Loom will automatically attach sourcesJar to a RemapSourcesJar task and to the "build" task
+        // if it is present.
+        // If you remove this line, sources will not be generated.
         withSourcesJar()
+
+        sourceCompatibility = JavaVersion.VERSION_21
+        targetCompatibility = JavaVersion.VERSION_21
     }
-}
+
+    tasks.withType(JavaCompile).configureEach {
+        it.options.release = 21
+    }
+
+    // Configure Maven publishing.
+    publishing {
+        publications {
+            mavenJava(MavenPublication) {
+                artifactId = base.archivesName.get()
+                from components.java
+            }
+        }
+
+        // See https://docs.gradle.org/current/userguide/publishing_maven.html for information on how to set up publishing.
+        repositories {
+            // Add repositories to publish to here.
+            // Notice: This block does NOT have the same function as the block in the top level.
+            // The repositories here will be used for publishing your artifact, not for
+            // retrieving dependencies.
+        }
+    }
+}