adding mutt installation script

#additionalinstall/MUTT.md

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+# Mutt
+These are a bunch of programs to be able to use lukesmithxyz's mutt-wizard,
+which will be able to setup your neomutt acordingly.
+
+| program     | description           |
+| ----------- | --------------------- |
+| neomutt     | mail program          |
+| isync       | syncs mail            |
+| msmtp       | sends mail            |
+| pass        | encrypts passwords    |
+| mutt-wizard | autoconfigure neomutt |
+
+After this you will be able to:
+``` mw add ``` to add mailaccounts
+``` mw ls ``` to list existing ones
+``` mw pass ``` to revise passwords
+``` mw delete ``` to delete accounts
+``` mw purge ``` to delete all accounts and settings
+``` mw cron ``` toggle a cronjob to sync mail

#additionalinstall/mutt.sh

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+#!/bin/sh
+sudo pacman -S neomutt isync msmtp pass
+git clone https://github.com/lukesmithxyz/mutt-wizard
+cd mutt-wizard
+sudo make install
+cd ..
+rm -rf mutt-wizard