Add support for loading JKA assets. #25

Job	Run time
Build VS 2022 (Portable), Debug, Win32	2m 46s
Build VS 2022 (Portable), Debug, x64	5m 43s
Build VS 2022 (Portable), RelWithDebInfo, Win32	3m 26s
Build VS 2022 (Portable), RelWithDebInfo, x64	2m 42s
Build macOS (Portable), Debug, x86_64	3m 6s
Build macOS (Non-Portable), Debug, x86_64	3m 6s
Build macOS (Portable), Release, x86_64	5m 37s
Build macOS (Non-Portable), Release, x86_64	4m 36s
Build VS 2019 (Portable - WinXP), Debug, Win32	2m 27s
Build VS 2019 (Portable - WinXP), RelWithDebInfo, Win32	3m 5s
Build Linux (Portable - ubuntu:16.04), Debug	2m 50s
Build Linux (Non-Portable - ubuntu:16.04), Debug	2m 21s
Build Linux (Portable - ubuntu:16.04), Release	3m 56s
Build Linux (Non-Portable - ubuntu:16.04), Release	2m 43s
Build Linux (Portable - i386/ubuntu:16.04), Debug	2m 29s
Build Linux (Non-Portable - i386/ubuntu:16.04), Debug	2m 25s
Build Linux (Portable - i386/ubuntu:16.04), Release	4m 33s
Build Linux (Non-Portable - i386/ubuntu:16.04), Release	2m 55s
Build VS 2022 (Installer), RelWithDebInfo, Win32	3m 45s
	1h 4m 31s

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