docs: create dedicated docs for Golang impl

[amoeba]

Creates a dedicated area in the docs for the Golang impl, including:

• Index page
• Quickstart page
• Driver Manager page

This PR does not include cookbooks like we have for other impls.

Closes #3198

[amoeba]

ping @zeroshade

[lidavidm]

It's "just" a wrapper around the C++ driver manager

[amoeba]

Two things these docs aren't doing that the Python docs are doing:

• The Python docs can link to the Python API docs. For Go, I just link manually go the gopkg docs.
• The code blocks aren't tested to make sure they work like the Python ones are (with doctest). I didn't find anything off the shelf but maybe there's a good way to test the code in the .rst files.

I still need to at least test the code manually. I'll do that tomorrow.

[lidavidm]

The Python docs can link to the Python API docs. For Go, I just link manually go the gopkg docs.

You could try to shove the gopkg docs into Intersphinx but there's a circular dependency between go.dev and the docs build in the release process that makes that a bit annoying.

The code blocks aren't tested to make sure they work like the Python ones are (with doctest). I didn't find anything off the shelf but maybe there's a good way to test the code in the .rst files.

You could use go/sphinx recipes and just include relevant snippets via literalinclude

[lidavidm]

Hmm, should this be more like "The driver manager is a package that implements the ADBC Go API by delegating to dynamically-loaded drivers"?

[amoeba]

New language in 0326872.

[lidavidm]

It's "just" a wrapper around the C++ driver manager

[amoeba]

Thanks @lidavidm. @zeroshade mentioned out of band of this PR that they might prefer we use the Go pkgsite for this so I'm going to open up a separate PR to try that out too.

[amoeba]

Thanks for taking a look at this first pass @lidavidm. I'm closing this PR in favor of #3204 which I just merged.