Add textproc/py-extract-msg: Extracts emails and attachments saved in MS Outlook's .msg files

msg-extract extracts emails and attachments saved in Microsoft
Outlook's .msg files. It automates the extraction of key email data
(from, to, cc, date, subject, body) and the email's attachments.

WWW: https://github.com/TeamMsgExtractor/msg-extractor

PR: 265765