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 restructure meson.build and the ghactions workflow a bit, and enable -ffunction-sections and -fdata-sections.
Note that starcatcher uploads have not been tested and most likely don't work.
Certain file managers need this figure out that the executable is actually executable. The problem is further complicated by meson being uncooperative and not implementing its own -Db_pie=false correctly.
I forgot to update meson_options.txt when committing 360297c. At that
point, FUTURE_SAVE_VERSION in Config.h was 96. Without that, the game
can't load saves with GOL because they save as v96 elements.
Please update your existing build sites with
meson configure -Dfuture_major=96
as this change won't affect them unless you do.
