meson: Move video to separate section in meson configuration summary

What does this MR do and why?

Since the video configuration is shared by multiple video APIs, not just vulkan, move it to a separate section.

Additionally, placing video within the 'Vulkan' section has the side effect of not showing 'Video codecs' information if 'vulkan-drivers' is configured to null.

Before:

mesa 23.3.0-devel

  Directories
    prefix                       : /usr
    libdir                       : lib64
    includedir                   : include

  Common C and C++ arguments
    c_cpp_args                   : -mtls-dialect=gnu2

  OpenGL
    OpenGL                       : YES
    ES1                          : YES
    ES2                          : YES
    Shared glapi                 : YES
    GLVND                        : NO

  DRI
    Platform                     : drm
    Driver dir                   : /usr/lib64/dri

  GLX
    Enabled                      : YES
    Provider                     : dri

  EGL
    Enabled                      : YES
    Drivers                      : builtin:egl_dri2 builtin:egl_dri3
    Platforms                    : x11 wayland surfaceless drm xcb

  GBM
    Enabled                      : YES
    Backends path                : /usr/lib64/gbm

  Vulkan
    Drivers                      : amd intel intel_hasvk swrast
    Platforms                    : x11 wayland surfaceless drm xcb
    ICD dir                      : share/vulkan/icd.d
    Video codecs                 : vc1dec h264dec h264enc h265dec h265enc
    Intel Ray tracing            : NO

  LLVM
    Enabled                      : YES
    Version                      : 16.0.6

  Gallium
    Enabled                      : YES
    Drivers                      : r300 r600 radeonsi nouveau virgl svga swrast iris crocus i915
    Platforms                    : x11 wayland surfaceless drm xcb
    Frontends                    : mesa xa vdpau va
    Off-screen rendering (OSMesa): NO
    HUD lm-sensors               : YES

  Perfetto
    Enabled                      : NO

  User defined options
    prefix                       : /usr
    video-codecs                 : vc1dec,h264dec,h264enc,h265dec,h265enc

After:

mesa 23.3.0-devel

  Directories
    prefix                       : /usr
    libdir                       : lib64
    includedir                   : include

  Common C and C++ arguments
    c_cpp_args                   : -mtls-dialect=gnu2

  OpenGL
    OpenGL                       : YES
    ES1                          : YES
    ES2                          : YES
    Shared glapi                 : YES
    GLVND                        : NO

  DRI
    Platform                     : drm
    Driver dir                   : /usr/lib64/dri

  GLX
    Enabled                      : YES
    Provider                     : dri

  EGL
    Enabled                      : YES
    Drivers                      : builtin:egl_dri2 builtin:egl_dri3
    Platforms                    : x11 wayland surfaceless drm xcb

  GBM
    Enabled                      : YES
    Backends path                : /usr/lib64/gbm

  Vulkan
    Drivers                      : amd intel intel_hasvk swrast
    Platforms                    : x11 wayland surfaceless drm xcb
    ICD dir                      : share/vulkan/icd.d
    Intel Ray tracing            : NO

  Video
    Codecs                       : vc1dec h264dec h264enc h265dec h265enc
    APIs                         : vdpau va vulkan

  LLVM
    Enabled                      : YES
    Version                      : 16.0.6

  Gallium
    Enabled                      : YES
    Drivers                      : r300 r600 radeonsi nouveau virgl svga swrast iris crocus i915
    Platforms                    : x11 wayland surfaceless drm xcb
    Frontends                    : mesa xa vdpau va
    Off-screen rendering (OSMesa): NO
    HUD lm-sensors               : YES

  Perfetto
    Enabled                      : NO

  User defined options
    prefix                       : /usr
    video-codecs                 : vc1dec,h264dec,h264enc,h265dec,h265enc

Signed-off-by: Feng Jiang jiangfeng@kylinos.cn