Add TOML configuration files for various packages

- Introduced build configurations for graphene, gst-plugins-bad, gst-plugins-base, gstreamer, gtk4, iso-codes, jbig2dec, libepoxy, libsoup3, libtheora, libxpm, lynx, md4c, openjpeg2, poppler-data, python-attrs, python-automat, python-constantly, python-hyperlink, python-incremental, python-twisted, python-versioneer, python-zope-interface, qpdf, sdl12-compat, tinysparql, unixodbc, vmaf, xcb-util-cursor, xcb-util-image, xcb-util-renderutil, xcb-util-wm, xcb-util, xdg-utils.
- Each package includes build type, dependencies, runtime requirements, and source URLs.
- Added necessary post-install scripts and configurations where applicable.

extra/gdk-pixbuf2/gdk-pixbuf2.toml

@@ -0,0 +1,45 @@
+[build]
+type = "meson"
+
+[build.flags]
+build_dir = "build"
+configure = [
+    "-Dpng=enabled",
+    "-Dgif=enabled",
+    "-Djpeg=enabled",
+    "-Dtiff=enabled",
+    "-Dthumbnailer=enabled",
+    "--wrap-mode=nofallback",
+    "-Dgtk_doc=true",
+    "-Dglycin=disabled",
+]
+
+[dependencies]
+build = [
+    "gi-docgen",
+    "gobject-introspection",
+    "meson",
+    "python-docutils",
+]
+optional = [
+    "libheif",
+    "libopenraw",
+    "libwmf",
+]
+runtime = [
+    "glib2",
+    "glibc",
+    "shared-mime-info",
+]
+
+[package]
+description = "An image loading library"
+homepage = "https://wiki.gnome.org/Projects/GdkPixbuf"
+license = "LGPL-2.0-or-later"
+name = "gdk-pixbuf2"
+version = "2.44.5"
+
+[[source]]
+extract_dir = "$name-$version"
+sha256 = "69b93e09139b80c0ee661503d60deb5a5874a31772b5184b9cd5462a4100ab68"
+url = "https://download.gnome.org/sources/gdk-pixbuf/2.44/gdk-pixbuf-$version.tar.xz"