meetup: add July meet-up with talk by Michael Baykov

The talk is on using category theory to parse command line options.

content/meetups/2024-07-09.md

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+title = "2024-07-09"
+date = "2024-07-09"
+draft = false
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+
+The July 2024 Rust for Lunch meet-up will have a single talk with time for
+questions afterwards.
+
+We'd like to remind everyone that all participants (speakers, moderators, and
+attendees) must follow the [Code of Conduct](@/about.md#code-of-conduct) during
+the meetup.
+
+- Meet-up call link: [https://lecture.senfcall.de/hay-gmh-wox-mru](https://lecture.senfcall.de/hay-gmh-wox-mru) (Senfcall)
+- Date: **Tuesday, 14 May, 2024**
+- Time: [**11:00 - 12:00 UTC**](https://everytimezone.com/s/ede0036f)
+  - **12:00 - 13:00 GMT** (e.g. London, Bamako)
+  - **13:00 - 14:00 WAT/CET** (e.g. Kinshasa, Berlin)
+  - **14:00 - 15:00 EET/CAT** (e.g. Lviv, Cairo)
+
+### Using category theory to parse command line options
+
+#### Speaker: [Michael Baykov](https://functional.cafe/@manpacket)
+
+We are going to talk about side effects in Rust and how to manage them using
+abstractions from Category Theory using command line options parsing as an
+example. No prior knowledge in either Category Theory or command line options
+parsing is required, being able to read Rust code and look at pretty pictures
+should be enough 🙂
+
+