[YouTube channel] Add video: Apache Beam meetup London 3: Apache Beam meet up 3: Streaming SQL + Beam for ML use case + Beam in production

[Matthias Baetens <ba...@gmail.com>]

Hi all,

We would like to add this
<https://www.youtube.com/watch?v=z5DYDb_C3QA&feature=youtu.be> video to the
Apache Beam YouTube channel.

It is a recording of the third Beam meetup in London
<https://www.meetup.com/nl-NL/London-Apache-Beam-Meetup/events/247868648/?_cookie-check=5Gt56wWJIhZEvY1e>,
with the following content:
- How to launch and monitor your Beam pipelines in production by Victor
Kotai
- Using Beam to enable Machine Learning and predict congestion in London by
Matthias Baetens
- Foundations of Streaming SQL or: how I learned to ❤ streams & tables by
Tyler Akidau

Please let me know if there are any questions or comments, or if this looks
good to go!

Best regards,
Matthias
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