Add reflex-todomvc

[amesgen]

https://github.com/reflex-frp/reflex-todomvc/

Just opening the PR here as it seems like a convenient place.

However, merging this only makes sense if we want to broaden the scope of this repo from "Miso examples" to e.g. "WASM browser examples".

Temporary hosted version: https://amesgen.de/tmp/wasm/reflex-todomvc.html

[TerrorJack]

I think we can have a ghc-wasm-reflex-examples repo to host the code in this branch for increased visibility, what do you think? I don't mind duplicating a bit of code with miso examples repo, and I can take care of setting up that repo if you think it's a good idea.

[amesgen]

I think we can have a ghc-wasm-reflex-examples repo to host the code in this branch for increased visibility, what do you think? I don't mind duplicating a bit of code with miso examples repo, and I can take care of setting up that repo if you think it's a good idea.

Yeah, that sounds good 👍

[amesgen]

Closing in favor of https://github.com/tweag/ghc-wasm-reflex-examples, thanks @TerrorJack!