Switch to using ForgeFlower for Paper Only mc-dev imports

ForgeFlower is better than Spigots FernFlower at decompiling the source.

However, in order to maintain the CraftBukkit patches, we must keep
using spigots for the primary.

However, for any file that we import on top of Spigots imported files
there is nothing stopping us from using better decompiled files.

So these changes will use ForgeFlower to maintain a better set of
decomped files, so anything we add on top of Paper can start off
in a better spot.

Spigot-Server-Patches/Add-PlayerArmorChangeEvent.patch

@@ -5,7 +5,7 @@ Subject: [PATCH] Add PlayerArmorChangeEvent
 
 
 diff --git a/src/main/java/net/minecraft/server/EntityLiving.java b/src/main/java/net/minecraft/server/EntityLiving.java
-index 2ff82694b4..e2ceb7ae4b 100644
+index 72a2164fdf..61af2621c5 100644
 --- a/src/main/java/net/minecraft/server/EntityLiving.java
 +++ b/src/main/java/net/minecraft/server/EntityLiving.java
 @@ -0,0 +0,0 @@
@@ -30,11 +30,11 @@ index 2ff82694b4..e2ceb7ae4b 100644
                      if (!itemstack.isEmpty()) {
                          this.getAttributeMap().a(itemstack.a(enumitemslot));
 diff --git a/src/main/java/net/minecraft/server/EnumItemSlot.java b/src/main/java/net/minecraft/server/EnumItemSlot.java
-index cdf3a3ba4a..be5d0bf898 100644
+index a90ac68c30..49592e5572 100644
 --- a/src/main/java/net/minecraft/server/EnumItemSlot.java
 +++ b/src/main/java/net/minecraft/server/EnumItemSlot.java
 @@ -0,0 +0,0 @@ public enum EnumItemSlot {
-         this.j = s;
+         this.j = s1;
      }
  
 +    public EnumItemSlot.Function getType() { return this.a(); } // Paper - OBFHELPER