Support for `join`/`alsoDecode` about pagination

[anthonycastelli]

I've not given this much thought as it's not crossed my mind, however, I do see how this would be a need for some people. I'll look into implementing something like this, but if you do have any ideas, feel free to submit PR

[damirstuhec]

I think this would be a very welcoming addition. Personally, I have an example of a /feed route that should return a heterogeneous array of feed items with different types.

If we had support for something like @Cellane proposes, then we don't have to do a weird dance of type erasure in order to support decoding/encoding of that heterogeneous array and instead rely on the multi-type pagination to return a result including a separate array for every type.

[anthonycastelli]

Just wanted to circle back to these issues and say I haven't forgotten about them. Just been swamped lately so haven't had a chance to work on anything regarding these packages. 🙂

[gperdomor]

Any progress here?