Jellyfin MPV Cast device

mkdir /data/buildroot/package/jellyfin-mpvcast
cat > /data/buildroot/package/jellyfin-mpvcast/Config.in<< 'EOF'
bool "jellyfin-mpvcast"
        select BR2_PACKAGE_GIT
        select BR2_PACKAGE_FBV
        select BR2_PACKAGE_TK
        select BR2_PACKAGE_RPI_USERLAND
        select BR2_PACKAGE_LIBATOMIC
        select BR2_PACKAGE_LIBWEBSOCKETS
        select BR2_PACKAGE_FDK_AAC
        select BR2_PACKAGE_LIBCEC
        select BR2_PACKAGE_LIBPLATFORM
        select BR2_PACKAGE_PROTOBUF
        select BR2_PACKAGE_QT5
        select BR2_PACKAGE_SDL2
        select BR2_PACKAGE_PYTHON
        select BR2_PACKAGE_PYTHON3
        select BR2_PACKAGE_PYTHON_CERTIFI
        select BR2_PACKAGE_PYTHON_PILLOW
        select BR2_PACKAGE_PYTHON_REQUESTS
        select BR2_PACKAGE_PYTHON_SIX
        select BR2_PACKAGE_PYTHON_URLLIB3
        select BR2_PACKAGE_PYTHON_WEBSOCKET_CLIENT
        select BR2_PACKAGE_PYTHON_JINJA2
        select BR2_PACKAGE_PYTHON_JELLYFIN_APICLIENT
        select BR2_PACKAGE_PYTHON_MPV_JSONIPC
        select BR2_PACKAGE_PYTHON_MPV
        select BR2_PACKAGE_PYTHON_PROXY_TOOLS
        select BR2_PACKAGE_PYTHON_PYWEBVIEW
        select BR2_PACKAGE_FFMPEG
        select BR2_PACKAGE_MPV
        SELECT BR2_PACKAGE_JELLYFIN_MEDIA_PLAYER
        SELECT BR2_PACKAGE_JELLYFIN_MPV_SHIM
        SELECT BR2_PACKAGE_UNCLUTTER_XFIXES
        SELECT BR2_PACKAGE_XDOTOOL
        help
          Jellyfin MPV Cast device
EOF

cat > /data/buildroot/package/jellyfin-mpvcast/jellyfin-mpvcast.mk<< 'EOF'
################################################################################
#
# jellyfin-mpvcast
#
################################################################################

$(eval $(virtual-package))
$(eval $(host-virtual-package)
EOF

sed -i '/menu "Custom packages"/a source "package/jellyfin-mpvcast/Config.in"' /data/buildroot/package/Config.in