[date] Update to 3.0.0

[JackBoosY]

Update to version 3.0.0 to fix issue #9082.

[JackBoosY]

Hi @acgetchell, could you test this PR?

Thanks.

[yamcenutzer]

Question:
after updating to 3.0 date offers to use date::tz in cmake as link_library, but that doesn't work. You need to use date::date-tz.
Is that another cmake bug (aliases broken) or is there another way continuing to use date::tz in a cosuming cmake project ?

Thx,

[JackBoosY]

@yamcenutzer I think that because the official changed the target name, we should use the new name.

[yamcenutzer]

yes, ok,
I was just curious about thuis ALIAS feature of cmake. seems kinda useless if not actually misleading
to me now

[acgetchell]

When I try to use this, with the suggested date::date-tz I get:

CMake Error at /Users/adam/vcpkg/scripts/buildsystems/vcpkg.cmake:333 (_add_executable):
  Target "initialize" links to target "Threads::Threads" but the target was
  not found.  Perhaps a find_package() call is missing for an IMPORTED
  target, or an ALIAS target is missing?
Call Stack (most recent call first):
  CMakeLists.txt:80 (add_executable)

This goes away if I remove date::date-tz

But then just using date::date is insufficient:

====================[ Build | CDT_test | Debug ]================================
"/Users/adam/Library/Application Support/JetBrains/Toolbox/apps/CLion/ch-0/202.6397.106/CLion.app/Contents/bin/cmake/mac/bin/cmake" --build /Users/adam/CDT-plusplus/cmake-build-debug --target CDT_test
[1/1] Linking CXX executable tests/CDT_test
FAILED: tests/CDT_test 
: && /Library/Developer/CommandLineTools/usr/bin/c++  -g -flto=thin -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -Wl,-search_paths_first -Wl,-headerpad_max_install_names  tests/CMakeFiles/CDT_test.dir/main.cpp.o tests/CMakeFiles/CDT_test.dir/Apply_move_test.cpp.o tests/CMakeFiles/CDT_test.dir/Ergodic_moves_3_test.cpp.o tests/CMakeFiles/CDT_test.dir/Foliated_triangulation_test.cpp.o tests/CMakeFiles/CDT_test.dir/Function_ref_test.cpp.o tests/CMakeFiles/CDT_test.dir/Geometry_test.cpp.o tests/CMakeFiles/CDT_test.dir/Manifold_test.cpp.o tests/CMakeFiles/CDT_test.dir/Move_command_test.cpp.o tests/CMakeFiles/CDT_test.dir/Move_strategies_test.cpp.o tests/CMakeFiles/CDT_test.dir/S3Action_test.cpp.o tests/CMakeFiles/CDT_test.dir/Sphere_test.cpp.o tests/CMakeFiles/CDT_test.dir/Tetrahedron_test.cpp.o tests/CMakeFiles/CDT_test.dir/Torus_test.cpp.o tests/CMakeFiles/CDT_test.dir/Utilities_test.cpp.o tests/CMakeFiles/CDT_test.dir/Vertex_test.cpp.o tests/CMakeFiles/CDT_test.dir/Settings_test.cpp.o  -o tests/CDT_test  /Users/adam/vcpkg/installed/x64-osx/lib/libtbb.a  /Users/adam/vcpkg/installed/x64-osx/debug/lib/libmpfr.a  /Users/adam/vcpkg/installed/x64-osx/debug/lib/libgmp.a && :
undef: __ZNK4date9time_zone13get_info_implENSt3__16chrono10time_pointINS2_12system_clockENS2_8durationIxNS1_5ratioILl1ELl1EEEEEEE
undef: __ZN4date12current_zoneEv
Undefined symbols for architecture x86_64:
  "date::time_zone::get_info_impl(std::__1::chrono::time_point<std::__1::chrono::system_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1l> > >) const", referenced from:
      date::sys_info date::time_zone::get_info<std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000l> > >(std::__1::chrono::time_point<std::__1::chrono::system_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000l> > >) const in lto.o
  "date::current_zone()", referenced from:
      currentDateTime() in lto.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
ninja: build stopped: subcommand failed.

It doesn't seem that #9082 was resolved.

Here's a small, self-contained example illustrating the issue: https:/acgetchell/currentDateTime