convert API/server tests to mockito (#8848)

* convert API tests to mockito

* convert server tests to mockito

* add co-author

patches/server/0201-ItemStack-getMaxItemUseDuration.patch

@@ -1,25 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Aikar <aikar@aikar.co>
-Date: Tue, 5 Jun 2018 23:00:29 -0400
-Subject: [PATCH] ItemStack#getMaxItemUseDuration
-
-Allows you to determine how long it takes to use a usable/consumable item
-
-diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
-index 3c3f5a4b7109ec8b47b550f9e766556f8d1546ec..8b3cc7b9ea8ef3ddd619bc4a6affb5bb38cad8c3 100644
---- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
-+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
-@@ -173,6 +173,13 @@ public final class CraftItemStack extends ItemStack {
-         return (this.handle == null) ? Material.AIR.getMaxStackSize() : this.handle.getItem().getMaxStackSize();
-     }
- 
-+    // Paper start
-+    @Override
-+    public int getMaxItemUseDuration() {
-+        return handle == null ? 0 : handle.getUseDuration();
-+    }
-+    // Paper end
-+
-     @Override
-     public void addUnsafeEnchantment(Enchantment ench, int level) {
-         Validate.notNull(ench, "Cannot add null enchantment");