Add use_prebuilt_binding feature for consistent FFmpeg 7 API #412

Job	Run time
rust_clippy_check_ubuntu	7m 23s
rust_clippy_check_windows	23m 29s
rustfmt_check (ubuntu-latest)	4s
rustfmt_check (windows-latest)	27s
rustfmt_check (macos-latest)	8s
build_dynamic_and_test_windows_pre	2m 44s
build_static_and_test_ubuntu_with_system_ffmpeg	1m 37s
build_static_and_test_ubuntu	7m 41s
docs_rs_check	58s
build_dynamic_and_test_ubuntu	2m 51s
build_dynamic_and_test_macos	3m 8s
build_with_vcpkg_ffmpeg_windows (x86_64-pc-windows-msvc, x64-windows-static-md)	25m 55s
build_with_vcpkg_ffmpeg_windows (x86_64-pc-windows-msvc, x64-windows, true)	24m 51s
build_with_vcpkg_ffmpeg_windows (i686-pc-windows-msvc, x86-windows-static, -Ctarget-feature=+crt-...	21m 10s
build_with_vcpkg_ffmpeg_windows (x86_64-pc-windows-msvc, x64-windows-static, -Ctarget-feature=+cr...	23m 32s
build_with_vcpkg_ffmpeg_windows (i686-pc-windows-msvc, x86-windows-static-md)	22m 11s
build_with_vcpkg_ffmpeg_windows (i686-pc-windows-msvc, x86-windows, true)	21m 27s
build_dynamic_and_test_windows	1m 16s
	3h 10m 52s

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