Request ownership is no longer flaky. Requests are now owned by the code that makes requests, and Requests and the RequestManager co-own RequestHandles. RequestManager disowns a RequestHandle if it's done with it or if Request code reports that it's no longer needed.
All libcurl code has been moved to RequestManager. This is nice because once NOHTTP is removed, we can add any number of RequestManager implementations, for example one for Android.
Client outliving RequestManager is still a problem, this will have to be addressed later.
More precisely, refactor the code responsible for routing these GameController events to the Lua side. The issue with the previous solution was it relied on preprocessor macros to switch between Lua-ful and Lua-less builds.
Some files have been using various fixed-size types (uint32_t etc.),
which are defined in stdint.h / cstdint, without including said header
file. While this code worked with GCC12 (likely a transitive include),
under GCC13 it fails to build due to "unknown type" errors.
Also Factor out app constants that mods might change into Meson options and clean up format::URLEncode in the process, convert app and document icon data in arrays to actual images, actualize AppStream data for possible future packaging, add alternative command line format for opening filesystem saves and ptsave URLs, fix a memory leak in Platform::GetCwd, and add format::URLDecode.
Also fix a few bugs and other weirdness in Platform::DirectorySearch. Empty string paths would crash and filenames with 4 or fewer characters wouldn't register.
Also fix the first mouse click not being detected on windows with sdl 2.0.20. Apparenlty, we need SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH set to 1 for it to be detected.
Summary of migrated files will be shown to user in a popup, and a log file with every moved file will be left in the original directory
stamps, saves, scripts, screenshots, and powder.pref will be migrated. Recordings are not.
