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/opus/opus.toml

@@ -0,0 +1,29 @@
+[build]
+type = "meson"
+
+[build.flags]
+build_dir = "build"
+configure = [
+    "-Dasm=disabled",
+    "-Dcustom-modes=true",
+    "-Ddeep-plc=enabled",
+    "-Ddred=enabled",
+    "-Dosce=enabled",
+]
+post_install = [ 'install -Dm644 opus.m4 -t "$DESTDIR/usr/share/aclocal"' ]
+
+[dependencies]
+build = ["meson"]
+runtime = ["glibc"]
+
+[package]
+description = "Totally open, royalty-free, highly versatile audio codec"
+homepage = "https://www.opus-codec.org/"
+license = "BSD-3-Clause"
+name = "opus"
+version = "1.6.1"
+
+[[source]]
+extract_dir = "$name-$version"
+sha256 = "6ffcb593207be92584df15b32466ed64bbec99109f007c82205f0194572411a1"
+url = "https://downloads.xiph.org/releases/opus/opus-$version.tar.gz"