Open a PR for MQL docs when cnquery or providers ship

[tas50]

Summarize the content issue

Right now we (me) have to manually update the MQL docs when we ship providers or ship cnquery. I'd love to have a GH Action replace me here.

The basic flow today:

1. Checkout docs and cnquery repos in the same path
2. From cnquery run make lr/docs/markdown
3. From docs run make fmt
4. Commit whatever is new