Talk: Introduction into libfmt/std::format

**Title:** Introduction into libfmt/std::format

**Length:** ~45 minutes (tbd.)

**Status:** Concept phase

**Required preparation time:** ~1-2 weeks

**Description:**
I/O streams are slow, printf is too "C" and not extensible. libfmt changed the landscape of test formatting.
This talk shows how to use libfmt and which parts are available in the C++ standard library.