Add "Advanced Recipe Developers Gotchas/FAQs/Tips/Tricks"

[jbusecke]

For now just a reminder for us internally.

I often find myself in a situation where I ran into some gnarly issue, and at some point had figured this out (usually with @cisaacstern s help) and cannot find the notes. I propose to open a more in-depth developer focused section in the docs that e.g.

• Documents that you need to import packages used in beam pipelines within the stage (see e.g. Fix dynamic chunking imports leap-stc/cmip6-leap-feedstock#63)
• others that I will add here as they come up.