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/libwebp/libwebp.toml

@@ -0,0 +1,37 @@
+[build]
+type = "cmake"
+
+[build.flags]
+build_dir = "build"
+configure = [
+    "-DWEBP_BUILD_CWEBP=ON",
+    "-DWEBP_BUILD_DWEBP=ON",
+    "-DCMAKE_SKIP_INSTALL_RPATH=ON",
+    "-DWEBP_BUILD_EXTRAS=OFF",
+    "-DWEBP_BUILD_GIF2WEBP=ON",
+    "-DWEBP_BUILD_IMG2WEBP=ON",
+    "-DWEBP_BUILD_VWEBP=OFF",
+    "-G Ninja",
+]
+
+[dependencies]
+build = [
+    "cmake",
+    "ninja",
+    "giflib",
+    "libjpeg-turbo",
+    "libpng",
+]
+runtime = ["glibc"]
+
+[package]
+description = "WebP image codec library"
+homepage = "https://developers.google.com/speed/webp/"
+license = "BSD-3-Clause"
+name = "libwebp"
+version = "1.6.0"
+
+[[source]]
+extract_dir = "$name-$version"
+sha256 = "e4ab7009bf0629fd11982d4c2aa83964cf244cffba7347ecd39019a9e38c4564"
+url = "https://storage.googleapis.com/downloads.webmproject.org/releases/webp/libwebp-$version.tar.gz"