[uvw] update to <2.12.1>

[hihig2001]

Library name: uvw

New version number: 2.12.1

Other information that may be useful (release notes, etc...)
current vcpkg version is 2.7.0 and it is way behind from current version.
2.12.1 uses recent version of libuv which is 1.44.1

https://github.com/skypjack/uvw/tags

[hihig2001]

skypjack/uvw@6ed2113

clang-cl compile error also has been fixed!

[hihig2001]

not sure but it seems uvw 2.12.1 supposed to use 1.44.1 and current vcpkg version is using 1.43. and it seems it doesn't compile. there some unknow libuv api, that is not existed in 1.43, in uvw.

[FrankXie05]

@hihig2001 The port livuv is being updated to 1.44.1 #24745， and I have updated the port libuvw to the latest commit skypjack/uvw@3db9e8f

[hihig2001]

It seems libuv hasn't updated cause ci of linux build has failed some reason. Because of that i couldn't access to recent uvw. Since there are no 1.44.1 in libuv in vcpkg, uvw failed to compile when they access to api that has existed on recent version of libuv.

[FrankXie05]

@hihig2001 sorry, i'll fix it right away. 🦾

[hihig2001]

hi guys i got this error from 'uvw' in recent vcpkg.
i'm using 'vcpkg.json' and constrained version by specifying builtin-baseline

"builtin-baseline": "98f8d00e89fb6a8019c2045cfa1edbe9d92d3405"

hope it works too

1> [CMake] CMake Error at C:/dev/vcpkg/scripts/buildsystems/vcpkg.cmake:824 (_find_package):
1> [CMake] Could not find a package configuration file provided by "unofficial-libuv"
1> [CMake] with any of the following names:
1> [CMake]
1> [CMake] unofficial-libuvConfig.cmake
1> [CMake] unofficial-libuv-config.cmake
1> [CMake]
1> [CMake] Add the installation prefix of "unofficial-libuv" to CMAKE_PREFIX_PATH or
1> [CMake] set "unofficial-libuv_DIR" to a directory containing one of the above
1> [CMake] files. If "unofficial-libuv" provides a separate development package or
1> [CMake] SDK, be sure it has been installed.
1> [CMake] Call Stack (most recent call first):
1> [CMake] out/build/windows-msvc-debug-hard-mode/vcpkg_installed/x64-windows/share/uvw/uvw-config.cmake:1 (find_package)
1> [CMake] C:/dev/vcpkg/scripts/buildsystems/vcpkg.cmake:824 (_find_package)
1> [CMake] knuckles/CMakeLists.txt:13 (find_package)