XMPP async

[flowolf]

Description:

Move notify.XMPP from sleekxmpp to slixmpp to allow async functionality.

• adds resource config option: lets users define the resource part of the sender address. see example below.
• adds support for TLSv1.1 and TLSv1.2

Related issue (if applicable): fixes #17005

Pull request in home-assistant.io with documentation (if applicable): home-assistant/home-assistant.io#6640

Example entry for configuration.yaml (if applicable):

# Example configuration.yaml entry
notify:
  - name: NOTIFIER_NAME
    platform: xmpp
    sender: YOUR_JID
    password: YOUR_JABBER_ACCOUNT_PASSWORD
    recipient: YOUR_RECIPIENT
    room: roomXY@server.jabber.example.com  # (option)
    resource: HA-lakehouse  # (option)

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox. Your PR cannot be merged unless tests pass

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated in home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• New dependencies have been added to the REQUIREMENTS variable (example).
• New dependencies are only imported inside functions that use them (example).
• New or updated dependencies have been added to requirements_all.txt by running script/gen_requirements_all.py.
• New files were added to .coveragerc.

If the code does not interact with devices:

• Tests have been added to verify that the new code works.

[fabaff]

Thanks for working on this.

[thundergreen]

I would highly appreciate also having httupuload integrated for xmpp notify ... Currently I use a cli command with
https://github.com/sezuan/uploadr

But slixmpp also has build in httupuload functionality. I know not really very much people use xmpp but I think it's worth to get the best out of it .

Furthermore I was thinking about a xmpp bit to interact with Hass ...well only ideas but httupuload would be great

[fabaff]

@thundergreen, I think that we should keep this PR limited to the migration to slixmpp.

[thundergreen]

Why not just pimp this component to a next upper level? Would be nice to modernize this component ..like this it's an alternative to telegram and co, slixmpp offers this so why not using it?

In terms of privacy and what this project aims to provide I think it's also time to give users with high privacy level a way to use a complete notifications platforms Without the need to build their very own custom platforms and services

[MartinHjelmare]

@thundergreen one PR per feature.

[flowolf]

@thundergreen I'd like to focus on the task at hand in this PR.
I'm already looking into HTTP upload with slixmpp. However this will be another PR.

[MartinHjelmare]

Looks good!

[fabaff]

Thanks 🐦