Reorganize the module into folders with v.mod subdirs

[davlgd]

@Jengro777 sorry about that. Since V dropped the virtual src/ directory, I've gotten into the habit of keeping modules flat, and I overdid it here. Following your comment, this brings a hierarchy back:

kdl.v        data model and module docs
parser/      parser.v, scanner.v, strings.v
writer/      writer.v
marshal/     marshal.v (public API), schema.v, encode.v, decode.v
tests/       all tests, plus the vendored test_cases/
examples/

The folders are listed as subdirs in v.mod, the mechanism that replaced src/ (vlang/v@5518bfc). Every file stays in module kdl, so the API is unchanged, and the tests now only use the public API. The source files are moved as they are, with no code changes.

One caveat: v doc doesn't follow subdirs yet, so symbols from the subfolders are missing from the generated docs. I can send a fix upstream if you're OK with this layout.

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[Jengro777]

You can use AI fit's confirmed, you can merge the PR your

The kdl library itself is pretty small, so the main focus going forward is on stability and releasing it to the vpm site

[davlgd]

you can merge the PR

I don't have rights to do it

[Jengro777]

you can merge the PR

I don't have rights to do it

Try again