API, new commands

new API for client and commands, added new commands
superscript, doublestruck (Fonts/Symbols generator)
rickroll (For rickroll)
quote, triggered,rank (Image generator)

• Emojiadd command(It works normally with image and links)
• Emoji not showing normally on help and shop command
• Case insensitive prefix
  Now it can reply with c. and also C.
• Improved economy system