docs: Create Ibis for dplyr users document

[amoeba]

Addresses #5922.

@fmichonneau and I paired up on #5922 during the recent Ibis doc-a-thon. To keep the work in scope for the doc-a-thon, we decided to start small and base the content on https://dplyr.tidyverse.org/articles/dplyr.html. @fmichonneau brought that content in and developed Ibis equivalents for each bit. I then extended that by adding a section at the top highlighting major differences and also added in joins and pivoting to make it more comprehensive.

@fmichonneau could you take a look, especially at the content I added?

After that, I think it'd be good to get @ianmcook to review and also a core Ibis dev.

Specific bits of feedback I'm interested in are:

• Is the size/scope of this enough? The other Ibis for X guides are more comprehensive.
• Does the section at the top about major differences work? Is it accurate and complete?

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[amoeba]

Thanks for having a go-through @cpcloud. I resolved all but two of your comments.

[gforsyth]

Thanks for putting this together @amoeba and @fmichonneau!

I flagged a few typos and some small language nits, but nothing major.

[ianmcook]

One gotcha with Ibis that might trip up users coming from dplyr is when a column name collides with the name of a method of the Ibis table object. For example if you have a column named count. In this case you need to use _["count"] instead of _.count. It might be worth mentioning that somewhere.

[amoeba]

Thanks for the review @gforsyth, I took all of your suggestions as-is and left one question for you about NULL ordering.

Thanks also for the review @ianmcook! I took all of your suggestions and left one conversation unresolved. Your point about name collisions on columns is a good one. It didn't feel high-level enough to cover at the top so I put it as a note in the select section.

[amoeba]

Thanks all. I've rebased the branch off main and I think all feedback has been incorporated without issue. This is ready for a final review if anyone wants.

[amoeba]

I addressed one last bit of feedback from @ianmcook in 0609126 and this is again ready for review/merge.

[gforsyth]

Thanks @amoeba and @fmichonneau !

This looks great and we should

Can you squash the commits down and format the message using conventional commit style?

Maybe something like docs(intro): create Ibis for dplyr users document

[amoeba]

Squashed and amended, thanks @gforsyth. See 0a96ee4.

[cpcloud]

Fixed up the pre-commit issue! Merging!