Make snippets/tags cog

[Ma-wa-re]

This cog will allow the creation of custom tags/snippets (Kind of like custom commands) for guilds. Admin/Mods can create tags using !tag create <Tag Name> <Response> Users can then do !tag <Tag Name> and the bot will send the response set for that tag

List of tag commands:

• create <Tag Name> <Response> - This will create a tag of <Tag Name> which will respond with <Response>
• delete <Tag Name> - This will delete the tag called <Tag Name>
• list - This will show the tags the guild has