Encode astc support #1000

Job	Run time
windows (windows-latest, Visual Studio 17 2022, v143, x64, NO, Debug,Release, ON, ON, OpenGL+Vulk...	25m 5s
windows (windows-latest, Visual Studio 17 2022, v143, x64, NO, Release, OFF, OFF, OFF, OFF, OFF, ...	4m 50s
windows (windows-latest, Visual Studio 17 2022, v143, x64, NO, Release, OFF, OFF, OFF, OFF, OFF, ...	4m 53s
windows (windows-latest, Visual Studio 17 2022, v143, x64, NO, Release, OFF, OFF, OFF, OFF, OFF, ...	4m 54s
windows (windows-latest, Visual Studio 17 2022, CLangCL, x64, NO, Debug,Release, ON, ON, OpenGL+V...	29m 11s
windows (windows-latest, Visual Studio 17 2022, CLangCL, x64, NO, Release, OFF, OFF, OFF, OFF, OF...	7m 41s
windows (windows-latest, Visual Studio 17 2022, CLangCL, x64, NO, Release, OFF, OFF, OFF, OFF, OF...	5m 28s
windows (windows-latest, Visual Studio 17 2022, CLangCL, x64, NO, Release, OFF, OFF, OFF, OFF, OF...	5m 31s
windows (windows-2019, Visual Studio 16 2019, v142, x64, Debug,Release, ON, ON, OpenGL+Vulkan, ON...	26m 33s
windows (windows-latest, Visual Studio 17 2022, CLangCL, arm64, Debug,Release, ON, ON, OpenGL+Vul...	15m 18s
	2h 9m 24s

Provide feedback