adding rss module from aikaterna to fix double post issue

rss/__init__.py

@@ -0,0 +1,11 @@
+from redbot.core import commands
+
+from .rss import RSS
+
+__red_end_user_data_statement__ = "This cog does not persistently store data or metadata about users."
+
+
+async def setup(bot: commands.Bot):
+    n = RSS(bot)
+    bot.add_cog(n)
+    n.initialize()