Potential gaps in 0.x to 1.x migration guide

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Hi there,

Thanks for the work on this.

I'm inheriting a project from another agency and they're using groqd 0.x.

I'm looking to migrate to 1.x but struggling on a couple areas, and I can't see guidance on migrating them in the current 0.x to 1.x guide.

I wanted to note a few things that seem to be missing, and ask for advice on migrating them:

- How to migrate from the previously exported `sanityImage`. Is the expectation to write our own fragment for this now? All good if so, I just can't find an answer in the docs. [I looked here](https://github.com/FormidableLabs/groqd/issues/332) but seems there's currently still an issue so wasn't sure what I should be doing
- I've seen uses of `q("").grab$()` in the codebase. Does this now become just `q.project()`?
- Similarly I've seen `.filter()`, however `filter()` requires now 1 parameter—how is this migrated? E.G. from the old docs `q("types").filter().deref().grab({ name: q.string() }),`
- This code also imports some types: `Selection`, `InferType` and `TypeFromSelection`, which are no longer exported. What's the migration path for these?

I apologise if any of these should be obvious. I'm new to Groqd.