Refactor cogs and update author formatting

Updated `__init__.py` to import specific cog classes
and added asynchronous `setup` functions for each.
Modified `info.json` to improve the formatting of the
"author" field for better readability.

pp/info.json

@@ -1,5 +1,6 @@
 {
-    "author": ["kitsunic"],
+  "author": [ "kitsunic" ],
+    "name": "PP",
     "description": "A cog for password protected channels",
     "end_user_data_statement": "This cog stores user, avatar, and guild data. A simple delete request to bot to remove your data or guild data",
     "install_msg": "Thanks for installing & testing.",