Code Generation for TypedKeys (#9233)

Currently includes generated key holder classes for types
used in the Registry Modification API

patches/api/0005-Add-FastUtil-to-Bukkit.patch

@@ -0,0 +1,19 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Fri, 1 Apr 2016 00:02:47 -0400
+Subject: [PATCH] Add FastUtil to Bukkit
+
+Doesn't expose to plugins, just allows Paper-API to use it for optimization
+
+diff --git a/build.gradle.kts b/build.gradle.kts
+index 75bfb0ab8049ebbb52240abf661d469de5526767..ecba866b84bc5f86a442bf220ab24ed8706aadf9 100644
+--- a/build.gradle.kts
++++ b/build.gradle.kts
+@@ -23,6 +23,7 @@ dependencies {
+     api("com.googlecode.json-simple:json-simple:1.1.1") {
+         isTransitive = false // includes junit
+     }
++    api("it.unimi.dsi:fastutil:8.5.6")
+     // Paper end
+ 
+     compileOnly("org.apache.maven:maven-resolver-provider:3.8.5")