Support pcapplusplus with zstd

[jj683]

https://pcapplusplus.github.io/docs/next/features#readingwriting-pcapng-files-with-compression

[jj683]

/home/runner/.xmake/cache/packages/2410/p/pcapplusplus/v24.09/source/3rdParty/json/include/json.hpp:24356:35: error: identifier '_json' preceded by whitespace in a literal operator declaration is deprecated [-Werror,-Wdeprecated-literal-operator]
 24356 | inline nlohmann::json operator "" _json(const char* s, std::size_t n)
       |                       ~~~~~~~~~~~~^~~~~
       |                       operator""_json

The problem is that the 3rd party json library that PcapPlusPlus use has a deprecated literal operator in it, which causes a warning (and error as the result of -Werror) in modern versions of clang.
I have created a PR to update the json library version (which fixes this problem):
seladb/PcapPlusPlus#1623
But it will take months for the new release.

How should we proceed in such a case? The extra flag with zstd (disabled by default) does not affect the build in any way.

[waruqi]

use io.replace or add_patches to patch and remove -Werror

[star-hengxing]

-Werror or -WX cannot be unconditionally enabled, package management must remove these flags.

[star-hengxing]

However, a better way for this library would be to patch cmake to remove the bundle dependencies.
If you're interested, consider using find_package or pkgconfig + import target.

if is_subhost("windows") then 
     add_deps("pkgconf") 
else 
     add_deps("pkg-config") 
end
add_deps("curlpp")

pkg_search_module(curlpp REQUIRED IMPORTED_TARGET curlpp)
target_link_libraries(xxx PkgConfig::curlpp)