improve: refactor APNG loader to use libpng-based implementation

[dudantas]

Replaces the custom APNG loading and saving logic in apngloader.cpp with a new implementation based on libpng, moved to apng_png.hpp. Updates CMakeLists.txt to require PNG, and ensures libpng is built with APNG support. This change modernizes and simplifies APNG handling, improving maintainability and leveraging standard library support.

[kokekanon]

I don't know if my baseline is outdated, but I'm getting this compilation error, vs community 2022 solution

1>D:\github\otclient.readme\src\framework\graphics\apng_png.hpp(164,71): warning C4003: not enough arguments for function-like macro invocation 'max'
1>(compiling source file 'otclient/x64/OpenGL/unity_QAHRA73EM9MJH98D.cpp')
1>D:\github\otclient.readme\src\framework\graphics\apng_png.hpp(164,71): error C2589: '(': illegal token on right side of '::'
1>(compiling source file 'otclient/x64/OpenGL/unity_QAHRA73EM9MJH98D.cpp')
1>D:\github\otclient.readme\src\framework\graphics\apng_png.hpp(164,40): error C2062: type 'unknown-type' unexpected
1>(compiling source file 'otclient/x64/OpenGL/unity_QAHRA73EM9MJH98D.cpp')
1>D:\github\otclient.readme\src\framework\graphics\apng_png.hpp(164,40): error C2144: syntax error: 'unknown-type' should be preceded by '('
1>(compiling source file 'otclient/x64/OpenGL/unity_QAHRA73EM9MJH98D.cpp')
1>D:\github\otclient.readme\src\framework\graphics\apng_png.hpp(164,77): error C2059: syntax error: ')'
1>(compiling source file 'otclient/x64/OpenGL/unity_QAHRA73EM9MJH98D.cpp')
1>D:\github\otclient.readme\src\framework\graphics\apng_png.hpp(263,52): warning C4003: not enough arguments for function-like macro invocation 'max'
1>(compiling source file 'otclient/x64/OpenGL/unity_QAHRA73EM9MJH98D.cpp')
1>D:\github\otclient.readme\src\framework\graphics\apng_png.hpp(263,52): error C2589: '(': illegal token on right side of '::'
1>(compiling source file 'otclient/x64/OpenGL/unity_QAHRA73EM9MJH98D.cpp')
1>D:\github\otclient.readme\src\framework\graphics\apng_png.hpp(263,23): error C2062: type 'unknown-type' unexpected
1>(compiling source file 'otclient/x64/OpenGL/unity_QAHRA73EM9MJH98D.cpp')
1>D:\github\otclient.readme\src\framework\graphics\apng_png.hpp(263,71): error C2059: syntax error: ')'
1>(compiling source file 'otclient/x64/OpenGL/unity_QAHRA73EM9MJH98D.cpp')

https://github.com/dudantas/otclient/blob/358e66fa93c96e1187522057a850e239a22d3563/src/framework/graphics/apng_png.hpp#L163-L165

https://github.com/dudantas/otclient/blob/358e66fa93c96e1187522057a850e239a22d3563/src/framework/graphics/apng_png.hpp#L262-L263

posible fix: ( )

-      std::min<uint32_t>(milliseconds, std::numeric_limits<uint16_t>::max()));
+      std::min<uint32_t>(milliseconds, (std::numeric_limits<uint16_t>::max)()));

-  totalFrames > std::numeric_limits<size_t>::max() / frameStride)
+  totalFrames > (std::numeric_limits<size_t>::max)() / frameStride)

[sonarqubecloud]

Quality Gate passed

Issues
23 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud