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/python-attrs/python-attrs.toml

@@ -0,0 +1,17 @@
+[build]
+type = "python"
+
+[package]
+description = "Attributes without boilerplate."
+homepage = "https://www.attrs.org/"
+license = "MIT"
+name = "python-attrs"
+version = "26.1.0"
+
+[[source]]
+extract_dir = "$name-$version"
+url = "https://github.com/python-attrs/attrs.git#$version"
+
+[dependencies]
+runtime = [ "python" ]
+build = [ "python-hatch-fancy-pypi-readme", "python-hatch-vcs", "python-hatchling", "git" ]