Instead of using set_target_properties on all tool binaries,
instead we can use target_compile_features([xxx] PUBLIC cxx_std_20).
This properly alienates projects which depend on libeuropa, allowing the src/tools CMakeLists to be trimmed down quite a bit.
Also fixes a build break I accidentally introduced.
PakReader won't read everything in ReadData(), it now only reads the header and TOC.
Files now need to be read in separately.
Adds progress bar to europa_pack_extractor.
Moved code around.