Create a feature matrix to compare between Android and desktop

During the in-person Gothenburg meeting, we decided we need to create a feature matrix for desktop vs. TBA.

Basically, we said that it might not make sense to implement the same features in the same way (e.g., letterboxing?).

Also, we should create a list of what exactly we have on desktop, even though it might be hard because of the uplifted patches.

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