Docsite RAG: selectively include job examples

[josephjclark]

The docsite includes extensive libraries of example job code

Most of them are rubbish. Well that's not fair, most of them are just a bit old.

I'm pretty sure that we ignore them right now.

The services team is actively working on improving these and the most modern, updated examples are a great input for the assistant.

We should work out a) how to include them in the embedded docs (is this a new doc type?) and b) how to ignore the bad ones (maybe we embed a tag in the data which our docs parser can pick up)