Project Proposal: Task-oriented content combining multiple APIs

[dominiccooney]

Looking at 2022 Q2 Projects (Issue #95) I was speculating that MDN could write some intermediate/advanced tutorial or "architecture guide" content which cuts across multiple APIs.

To use Q2 projects as an example, something about implementing themes could combine CSS colors and cascade layers, plus some other APIs (prefers-color-scheme, CSS variables, maybe shadow parts.)

@estelle asked me to file this issue during last week's steering committee meeting. I'm not advocating a massive change of direction here: I really like MDN's comprehensive, individual-method-and-property level API documentation. But advanced material using different APIs together could have compelling value.