Add various packages and patches for build system improvements

- Introduced valgrind with a patch to respect flags and updated its configuration.
- Added Vulkan ICD loader with CMake build configuration.
- Implemented Waf build system with a custom build script and configuration.
- Included Wayland protocols with Meson build system.
- Added xcb-util-keysyms with autotools configuration.
- Introduced Yasm with multiple patches for compatibility and improvements.
- Added Yelp tools and XSL with Meson build configurations and necessary patches for POSIX compliance.

extra/dav1d/dav1d.toml

@@ -0,0 +1,31 @@
+[build]
+type = "meson"
+
+[build.flags]
+build_dir = "build"
+configure = [
+    "-Dtestdata_tests=false",
+    "-Denable_docs=false",
+]
+skip_tests = true
+
+[dependencies]
+build = [
+    "nasm",
+    "ninja",
+    "xxhash",
+    "meson",
+]
+runtime = ["glibc"]
+
+[package]
+description = "AV1 cross-platform decoder focused on speed and correctness"
+homepage = "https://code.videolan.org/videolan/dav1d"
+license = "BSD-2-Clause"
+name = "dav1d"
+version = "1.5.3"
+
+[[source]]
+extract_dir = "$name-$version"
+sha256 = "732010aa5ef461fa93355ed2c6c5fedb48ddc4b74e697eaabe8907eaeb943011"
+url = "https://downloads.videolan.org/pub/videolan/$name/$version/$name-$version.tar.xz"