Add CJS/ESM variants to sqlite documentation where missing

[mureinik]

Make sure all the functions documented in sqlite's documentation have CJS/ESM variants:

This PR includes:

• Adding a CJS variant for createTagStore
• Separating applyChangeset's code snippet to CJS and ESM variants and adding the missing import/require of DatabaseSync to them so it's executable without having to manually modify it.

Fixes: #60394

[nodejs-github-bot]

Review requested:

• @nodejs/sqlite

[louwers]

Are documentation examples required to be self-contained? I had a discussion with @Renegade334 in #60200 (comment)

I think it's a good practice. It's a shame the whole snippet has to be repeated though.

[mureinik]

@louwers:

Are documentation examples required to be self-contained? I had a discussion with @Renegade334 in #60200 (comment)

I admit I don't contribute enough to the Node.js project to have a strong opinion here (or for my opinion to carry much weight, TBH).
However, empirically, there are six code snippets that call new DatabaseSync in the sqlite documentation for Node.js 25.0.0.
Five of them contain an explicit require/import for it beforehand, and applyChangeset doesn't, so I figured that was an oversight and it would be better to follow suite.

I think it's a good practice.

Agreed

It's a shame the whole snippet has to be repeated though.

Agreed on this one too.
I'm not aware of a way to dedup the examples and share code between the CJS and ESM snippets, but maybe I'm missing something here.