fftools/ffprobe: add only_first_vframe option to show first video frame info #1117

Job	Run time
build_portable_mac / Build Portable FFmpeg (macos-13, x86_64)	1m 57s
build_portable_linux / Build Portable FFmpeg (amd64)	1m 56s
build_debian / Build FFmpeg (bullseye, amd64)	1m 55s
build_portable_mac / Build Portable FFmpeg (macos-14, arm64)	1m 55s
build_portable_windows / Build Portable FFmpeg (win64)	1m 56s
build_portable_linux / Build Portable FFmpeg (arm64)	1m 56s
build_debian / Build FFmpeg (bullseye, arm64)	1m 57s
build_debian / Build FFmpeg (bullseye, armhf)	1m 56s
build_portable_windows_clang / Build Portable FFmpeg (CLANG64, win64)	1m 48s
build_debian / Build FFmpeg (bookworm, amd64)	1m 56s
build_ubuntu / Build FFmpeg (focal, amd64)	1m 54s
build_debian / Build FFmpeg (bookworm, arm64)	1m 55s
build_debian / Build FFmpeg (bookworm, armhf)	1m 58s
build_ubuntu / Build FFmpeg (focal, arm64)	1m 55s
build_ubuntu / Build FFmpeg (focal, armhf)	1m 55s
build_ubuntu / Build FFmpeg (jammy, amd64)	1m 25s
build_ubuntu / Build FFmpeg (jammy, arm64)	55s
build_ubuntu / Build FFmpeg (jammy, armhf)	1s
build_ubuntu / Build FFmpeg (noble, amd64)	1s
build_ubuntu / Build FFmpeg (noble, arm64)	1s
build_ubuntu / Build FFmpeg (noble, armhf)	1s
build_portable_windows_clang / Publish Portable Release	1s
build_portable_windows / Publish Portable Release	1s
build_portable_linux / Publish Portable Release	1s
build_ubuntu / Publish Release	1s
build_portable_mac / Publish Portable Release	1s
build_debian / Publish Release	1s
	31m 19s

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