Add permission for F3+N debug

docs/source/permissions.rst

@@ -34,6 +34,10 @@ need to be granted the permissions you want them to have using a permissions plu
     Hold spacebar while not moving to charge the toggle. Instead of blowing up the powered
     state will toggle on or off.
 
+* **purpur.debug.f3n**
+    - **description**: Allows the use of the F3+N debug hotkey to swap gamemodes.
+    Player must have this perm _and_ the gamemode perm for it to work.
+
 * **purpur.drop.spawners**
     - **description**: Players with this permission can use a diamond pickaxe with silk
     touch enchantment to mine up any spawner cage instead of disappearing.

patches/server/0093-Add-permission-for-F3-N-debug.patch

@@ -0,0 +1,24 @@
+From 58c42c906efcb19a5f6f3bc28d589165f96c5f39 Mon Sep 17 00:00:00 2001
+From: William Blake Galbreath <Blake.Galbreath@GMail.com>
+Date: Sat, 28 Dec 2019 04:21:54 -0600
+Subject: [PATCH] Add permission for F3+N debug
+
+---
+ src/main/java/net/minecraft/server/PlayerList.java | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/main/java/net/minecraft/server/PlayerList.java b/src/main/java/net/minecraft/server/PlayerList.java
+index 6398c367f..c48933cd6 100644
+--- a/src/main/java/net/minecraft/server/PlayerList.java
++++ b/src/main/java/net/minecraft/server/PlayerList.java
+@@ -904,6 +904,7 @@ public abstract class PlayerList {
+             } else {
+                 b0 = (byte) (24 + i);
+             }
++            if (b0 < 28 && entityplayer.getBukkitEntity().hasPermission("purpur.debug.f3n")) b0 = 28; // Purpur
+ 
+             entityplayer.playerConnection.sendPacket(new PacketPlayOutEntityStatus(entityplayer, b0));
+         }
+-- 
+2.24.0
+