Fix bugs and improve code

[BUG FIX]:

• Fix parsing mail and using simpleParser such as promise
• If text resolved by mailparser has undefined needs be remove html tags from message

[REFACTOR]

• Get simpleParser by injection dependency by decoded service (refactor)
• Remove error params from handleParseMail
• Using promise on simpleParser

[CHORE]

• Remove unused libs
• Increment release to 1.1.0

Published the first version of the bot

[FEATURES]

• Receive notifications and send to some discord channel

[LIMITATIONS]

• For now the notification is sent only in emails that are just text/plain. Next, we'll think about how to send notifications by emails written in text/html.