update to support dear-imgui 1.2.2 ; additional arguments to childWindow

[noinia]

Cool project! It seems that this no longer builds with the latest version of dear-imgui available on hackage. The PR provides two fixes that allow it to compile again. I did introduce some new intermediate "config" data type to pass newChildWindow since that seemed more reasonable than have 5 arguments, but if you rather have separate arguments that can be refactored.

[o1lo01ol1o]

Thanks! It looks like the nix sources will need to be updated to get a more recent hash of hackage. You can use niv-update if you have niv installed or use these pins for haskell.nix.

        "rev": "fe40c2aed052a54bb05ba38c5b74ff8feaac1df3",
        "sha256": "04b0w28xfna1qxdiipjwa5cwbq38fd7mn1pa2451n79anly74ljm",

I did this as a proof of concept but didn't get so much use out of it yet. Let me know if you have any improvements to the ergonomics.

[noinia]

I don't have niv or nix installed. I just built it with cabal and it just worked.

In terms of ergonomics, I will open issues and PR's if I have any suggestions or improvements in mind. So far I didn't have time to actually do anything with it (other than get it to build) either (Hopefully that will change soon.) Apparently the api in c-bindings themselves is also still a bit of work in progress to see what works best (see e.g. haskell-game/dear-imgui.hs#33)