[DOC]- Add accessibility documentation to JupyterLab docs (user)

[trallard]

Need to open a PR to add a documentation section on accessibility - with inspiration from https://code.visualstudio.com/docs/editor/accessibility

TODO

Beta Give feedback

1. Scope content - will be done collaboratively @steff456 will start a Google Doc
2. Review references in Accessibility docs best practices jupyter/accessibility#15
3. Create an accessibility-focused documentation page in JupyterLab docs Create an accessibility section in the user JupyterLab documentation jupyterlab/jupyterlab#14396
4. Notebook authoring guide (Based on Notebooks For All findings and mentioned in jupyter/accessibility #125)

[trallard]

@isabela-pf discussed the Accessibility statement at the global council meeting

Next: recorded stuff -> contribute to JupyterLab (from https://jupyter-accessibility.readthedocs.io/en/latest/resources/JupyterLab-a11y-statement.html)

[steff456]

Brainstorm of ideas -> https://docs.google.com/document/d/1b-MvWfNhsJGWZ-YfU86YosMFTkhTICvjUUtDOi8d6AM/edit?usp=sharing

[gabalafou]

I can take on writing and research for:

1. Tab traps
2. Customizing font (family and size)

When should I aim to have this done?

[trallard]

By the end of the sprint? January 5th

I will take on finding themes in the wild and identifying if any accessibility affordances built it.
Also can dig into what is possible with customisation right now (with the settings)

[trallard]

On this same effort - we are submitting a Google Season of Docs proposal see https://docs.google.com/document/d/1gbPzQuVGa2eIeK6T4eNaxoW4qK9XXg9MSOVoHh_AGlo/edit

[isabela-pf]

Unexpectedly, the JupyterLab user testing efforts gave us some insight to details that might be helpful to include around user-facing accessibility documentation in JupyterLab. I'll summarize the points here for safe keeping.

• Make keyboard shortcuts more easily available in JupyterLab docs.
• Mention the command palette in the JupyterLab accessibility docs. This seems like it has the potential to be helpful, but was not well known by several participants.
• Call out how to make cell execution chime (or other notification) when complete. Some participants said they’d heard of it, but have no idea how to do it. (Note: I'm not sure this is possible in default JupyterLab, but it is worth checking.)
• Mention font size, theme, and other UI modifications in JupyterLab accessibility docs, even if it is only to link to further documentation on it.

[trallard]

Closing this meta issue - the user docs issue will remain open as Stephannie is working on this with Johnson