Moves load and loadPublic to their own files, and removes some redundancy

src/main/resources/plugin.yml

@@ -65,6 +65,14 @@ commands:
     description: Sets the title of the held book
     usage: /<command> <title>
     permission: bookswithoutborders.settitle
+  load:
+    description: Loads a previously saved book from the holding player's folder
+    usage: /<command> <file name or number> [copies] [is signed (true/false)]
+    permission: bookswithoutborders.load
+  loadpublic:
+    description: Loads a previously saved book from the public books folder
+    usage: /<command> <file name or number> [copies] [is signed (true/false)]
+    permission: bookswithoutborders.loadpublic
 permissions:
   bookswithoutborders.admin:
     description: Grants all permissions