Example: how to use Snippet with Slots to make the best use of both HTML and Python

[volfpeter]

Slot support arrived in version 0.5.0 for both the Snippet and MD components, but there was no proper example in the documentation on how to use this new feature. Finally, there is, in the form of a tiny FastAPI app that uses a mix of plain HTML, Snippet, Slots, and "classic" htmy components to render a page. The example uses FastHX to automate rendering.

Example: https://volfpeter.github.io/htmy/examples/snippet-slots-fastapi/

FastHX integration example for htmy: https://volfpeter.github.io/fasthx/examples/htmy/

There's a lot more Snippet and MD can do with their TextResolver and TextProcessor abstractions, and their text processing pipeline. Hopefully I'll have time to add more complex examples in the not too distant features. In the meantime, feel free to ask questions.