feat: complete license table with 264 packages from bitbake -e extraction

- Replace placeholder CSV (11 rows) with full 264-package inventory
- All SRC_URI URLs fully resolved via bitbake -e (224/264 have URLs)
- 40 packages without URLs are meta-packages/virtual providers
- Add build artifacts (pn-buildlist) and regeneration instructions
- Add .gitignore for __pycache__
- Update README with license distribution summary
- Update Excel import instructions with actual column descriptions

License distribution: MIT (41), GPL-2.0 (32), GPL-2.0+ (22), BSD-3 (19)
Extraction: bitbake -e per recipe, machine=tqma6ul-multi-mba6ulx, distro=spaetzle

docs/05-build-artifacts/pn-buildlist

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+tq-image-small-debug
+quilt-native
+patch-native
+pseudo-native
+linux-tq
+xz-native
+cross-localedef-native
+qemuwrapper-cross
+makedevs-native
+opkg-utils-native
+update-rc.d-native
+rpm-native
+dnf-native
+createrepo-c-native
+bmaptool-native
+pigz-native
+u-boot-tq
+parted-native
+gptfdisk-native
+dosfstools-native
+mtools-native
+mtd-utils-native
+binutils-cross-arm
+syslinux-native
+btrfs-tools-native
+erofs-utils-native
+cdrtools-native
+e2fsprogs-native
+depmodwrapper-cross
+squashfs-tools-native
+packagegroup-core-boot
+packagegroup-base
+packagegroup-hwutils
+packagegroup-fsutils
+packagegroup-netutils
+packagegroup-sysutils
+packagegroup-can
+run-postinsts
+packagegroup-core-ssh-dropbear
+python3-native
+python3-setuptools-native
+python3-six-native
+coreutils-native
+libtool-native
+autoconf-native
+automake-native
+attr-native
+pkgconfig-native
+sqlite3-native
+dwarfsrcfiles-native
+kmod-native
+kern-tools-native
+gcc-cross-arm
+bc-native
+bison-native
+ncurses-native
+lzop-native
+openssl-native
+gettext-minimal-native
+qemu-native
+perl-native
+lua-native
+popt-native
+libgcrypt-native
+zstd-native
+file-native
+bzip2-native
+cmake-native
+elfutils-native
+ninja-native
+libcomps-native
+libdnf-native
+librepo-native
+zlib-native
+libxml2-native
+expat-native
+glib-2.0-native
+curl-native
+python3-installer-native
+python3-build-native
+python3-wheel-native
+gcc-runtime
+dtc-native
+musl
+swig-native
+util-linux-native
+texinfo-dummy-native
+readline-native
+lzo-native
+acl-native
+gnu-config-native
+flex-native
+nasm-native
+util-linux-libuuid-native
+lz4-native
+autoconf-archive-native
+update-rc.d
+initscripts
+ncurses
+zlib
+libedit-native
+libffi-native
+libnsl2-native
+gdbm-native
+libtirpc-native
+python3-flit-core-native
+gettext-native
+debianutils-native
+libgcc
+bsd-headers
+busybox
+opkg-utils
+base-files
+base-passwd
+init-ifupdown
+eudev
+netbase
+modutils-initscripts
+linux-firmware
+zstd
+tq-udev-rules
+e2fsprogs
+lrzsz
+alsa-utils
+u-boot-env-tq
+os-release
+setserial
+usbutils
+firmware-imx
+kmod
+udev-rules-imx
+alsa-state
+dosfstools
+hdparm
+usb-modeswitch-data
+uhubctl
+minicom
+lmsensors
+mmc-utils
+i2c-tools
+spitools
+libgpiod
+screen
+usb-modeswitch
+mtd-utils
+parted
+iperf2
+ethtool
+iproute2
+iperf3
+libubootenv
+cpupower
+procps
+cpufrequtils
+linuxptp
+rng-tools
+can-utils
+util-linux
+openssh
+dropbear
+m4-native
+python3-pyproject-hooks-native
+python3-packaging-native
+libssp-nonshared
+linux-libc-headers
+init-system-helpers
+gmp-native
+gtk-doc-native
+git-native
+gcc-source-13.4.0
+libmpc-native
+mpfr-native
+meson-native
+gperf-native
+make-native
+perlcross-native
+libgpg-error-native
+libcap-native
+lzlib-native
+libmicrohttpd-native
+libarchive-native
+re2c-native
+json-c-native
+gobject-introspection-native
+libcheck-native
+libsolv-native
+libmodulemd-native
+gpgme-native
+libpcre2-native
+libgcc-initial
+libcap-ng-native
+groff-native
+libtool-cross
+unzip-native
+figlet-native
+attr
+alsa-lib
+libsamplerate0
+fftw
+libusb1
+openssl
+bash-completion
+xz
+tcl-native
+lzo
+readline
+libmnl
+elfutils
+libcap
+iptables
+libyaml
+pciutils
+libjitterentropy
+argp-standalone
+libsocketcan
+libcap-ng
+util-linux-libuuid
+shadow-native
+shadow-sysroot
+shadow
+rsync-native
+unifdef-native
+busybox-inittab
+bash
+firmware-nxp-wifi
+python3
+gawk
+coreutils
+lmsensors-config
+perl
+tcl
+alsa-ucm-conf
+alsa-topology-conf
+shadow-securetty
+ca-certificates-native
+gnutls-native
+libyaml-native
+libassuan-native
+bzip2
+libsndfile1
+fts
+musl-obstack
+musl-legacy-error
+libbsd-native
+libffi
+libedit
+libtirpc
+sqlite3
+expat
+libnsl2
+gdbm
+gmp
+ttyrun
+ca-certificates
+acl
+findutils
+libunistring-native
+libtasn1-native
+nettle-native
+libidn2-native
+libogg
+flac
+libvorbis
+libmd-native