[Love Sprint 2] Document Atlassian Document Format (ADF) for confluence

Problem Definition

The Atlassian Document Format (ADF) for Confluence is not documented.

Suggested Solution

Create a documentation for the Atlassian Document Format (ADF).

The documentation should also discuss which one is the recommended format from Atlassian.

Note

At the time of the creation of this ticket, ADF is the recommended format. This will guarantee that all the features (including the most recent) are included and presented in the editor in their most recent representation.

Workaround

See the Jira documentation for ADF (https://developer.atlassian.com/cloud/jira/platform/apis/document/structure/) as well as the ADF utils package (https://atlaskit.atlassian.com/packages/editor/adf-utils) and the ADF playground (https://atlaskit.atlassian.com/examples/editor/editor-core/kitchen-sink).