Add new packages and build scripts for various libraries

- Added Nuklear GUI library with build script and configuration.
- Introduced OpenH264 encoder/decoder with build configuration.
- Added PortAudio library for audio I/O with custom build script.
- Included Python Execnet for multi-Python deployment.
- Added Pytest Xdist plugin for distributed testing.
- Introduced Shaderc for shader compilation tools.
- Added Snappy compression library with necessary patches and configuration.
- Included SoundTouch audio processing library with build configuration.
- Added SRT library for secure reliable transport.
- Introduced VapourSynth video processing framework with configuration.
- Added Vid.stab for video stabilization.
- Included WebRTC Audio Processing library with build configuration.
- Added X264 video encoding library with patches for POSIX compliance.
- Introduced X265 video encoder with build configuration.
- Added XKeyboard Config for X keyboard configuration files.
- Included Xorg XKBComp for keyboard description compilation.
- Added Xvidcore MPEG-4 video codec library with configuration.
- Introduced ZeroMQ messaging system with patches and build configuration.
- Added Zimg library for scaling and colorspace conversion.

extra/libfido2/libfido2.toml

@@ -0,0 +1,33 @@
+[build]
+type = "cmake"
+
+[build.flags]
+build_dir = "build"
+configure = ["-G Ninja", "-Wno-dev"]
+
+[dependencies]
+build = [
+    "cmake",
+    "ninja",
+]
+runtime = [
+    "glibc",
+    "openssl",
+    "libcbor",
+    "hidapi",
+    "zlib-ng",
+    "libudev"
+]
+
+[package]
+description = "Library functionality for FIDO 2.0, including communication with a device over USB"
+homepage = "https://developers.yubico.com/libfido2/"
+license = "BSD-2-Clause"
+name = "libfido2"
+version = "1.16.0"
+
+[[source]]
+extract_dir = "$name-$version"
+sha256 = "8c2b6fb279b5b42e9ac92ade71832e485852647b53607c43baaafbbcecea04e4"
+url = "https://developers.yubico.com/libfido2/Releases/libfido2-$version.tar.gz"
+post_extract = [ "sed -i '/D_FORTIFY_SOURCE=2/d' CMakeLists.txt" ]