Make the documentations for kedro-datasets work on kedro

[SajidAlamQB]

Signed-off-by: SajidAlamQB 90610031+SajidAlamQB@users.noreply.github.com

NOTE: Kedro datasets are moving from kedro.extras.datasets to a separate kedro-datasets package in
kedro-plugins repository. Any changes to the dataset implementations
should be done by opening a pull request in that repository.

Description

Since kedro.extras.datasets is moving to a separate kedro-datasets package, how will our docs work for kedro-datasets and kedro?

This PR will look to implement the solution outlined in the comment on issue: #1651 (comment).

kedro-datasets and kedro docs should remain together on RTD as they do now. The only difference is that the API docs for kedro-datsets will appear under kedro.datasets rather than kedro.extras.datasets. All the document-building takes place on the kedro repo.

To achieve this we need the following flow when docs are built on kedro:

1. Copy the kedro-datasets files into a datasets folder in kedro (maybe clone just the relevant branch of the repo? Or pip install --no-deps -t into the right directory is maybe easier?)
2. make build-docs on the kedro repo should then work as it does now to generate API docs for both kedro core and kedro datasets
3. the kedro-datasets files should not remain on the kedro repo - they're just temporarily copied across for docs generation

Development notes

Notes on how to copy kedro-datasets to kedro:

To copy kedro-datasets main use this command:

pip install --no-deps -t TARGET_DIRECTORY git+https://github.com/kedro-org/kedro-plugins.git#subdirectory=kedro-datasets

To copy kedro-datasets latest release use this command:

pip install --no-deps -t TARGET_DIRECTORY kedro-datasets

After the technical design session, we decided to simplify the design solution by allowing stable and latest in RTD to be the same as the latest version of kedro-datasets. In the near future, we will move away from ReadTheDocs and sphinx, so we are happy to leave this as a stop-gap solution.

• Created a bash script that copies kedro-datasets latest release to kedro.datasets in kedro. The script is used by build-docs.sh and .readthedocs.yml so that both the CI and ReadTheDocs will build the correct documentation.
• .readthedocs.yml has hooks/build customisation that allows us to copy over the kedro-datasets before docs are built.

Checklist

• Read the contributing guidelines
• Opened this PR as a 'Draft Pull Request' if it is work-in-progress
• Updated the documentation to reflect the code changes
• Added a description of this change in the RELEASE.md file
• Added tests to cover my changes

[merelcht]

Fantastic work @SajidAlamQB ! ⭐ The decision made in tech design really simplified the solution. Really well done on investigating all options and implementing it 👍

[stichbury]

Looks good to me. I couldn't build the docs on my machine from your branch because of various toolchain issues associated with tools like pyproj on my machine (which is a bit odd, as I've been building OK to date, but could be unrelated).

So I didn't verify the build myself locally (and the CI checks aren't returning success yet), but it looks sound to me from the perspective of what you've implemented. Nice work!

[stichbury]

@astrojuanlu just tagging you in on this as a record of the decision-making about datasets API docs.