Moved MJPG handling to testcamera #718

Job	Run time
Create test plan	4s
level1 / Haiku	1m 50s
level2 / Ubuntu 24.04 (ARM64)	4m 58s
level2 / RISC OS	1m 17s
level2 / Android (Gradle)	2m 28s
level2 / MacOS (Framework) (arm64)	1m 41s
level2 / MacOS (Framework) (x64)	3m 2s
level2 / Ubuntu 20.04	4m 20s
level2 / Windows (MSVC, clang-cl x86)	4m 27s
level2 / Windows (MSVC, x64)	6m 6s
level2 / MacOS (GNU prefix)	2m 49s
level2 / Windows (msys2, mingw32)	9m 14s
level2 / Sony PlayStation Vita (GLES w/ PVR_PSP2)	3m 16s
level2 / Ubuntu 22.04	3m 29s
level2 / tvOS (CMake & xcode)	1m 32s
level2 / Ubuntu 20.04 (Intel Compiler)	5m 39s
level2 / Windows (msys2, mingw64)	8m 24s
level2 / Windows (MSVC, ARM)	4m 8s
level2 / Steam Linux Runtime (Sniper)	2m 29s
level2 / Sony PlayStation 2	4m 55s
level2 / Windows (MSVC, ARM64)	4m 10s
level2 / PowerPC64	1m 42s
level2 / Sony PlayStation Portable	3m 46s
level2 / Android (CMake, lean)	2m 59s
level2 / Android (Android.mk)	1m 10s
level2 / Emscripten	4m 33s
level2 / Windows (MSVC, x86)	6m 9s
level2 / GDK (MSVC, x64)	3m 1s
level2 / LoongArch64	2m 35s
level2 / FreeBSD	2m 41s
level2 / Windows (msys2, ucrt64)	8m 43s
level2 / Windows (MSVC, clang-cl x64)	3m 37s
level2 / Windows (msys2, clang64)	4m 18s
level2 / Windows (msys2, clang32)	5m 20s
level2 / iOS (CMake & xcode)	1m 29s
level2 / NetBSD	3m 55s
level2 / Nintendo 3DS	1m 59s
level2 / PowerPC	1m 46s
level2 / Android (CMake)	4m 36s
level2 / Ubuntu 20.04 (Intel oneAPI)	6m 46s
level2 / Sony PlayStation Vita (GLES w/ pib)	3m 14s
	2h 34m 37s

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