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.

core/openssh/openssh.toml

@@ -0,0 +1,74 @@
+[build]
+type = "autotools"
+
+[build.flags]
+configure = [
+    "--disable-lastlog",
+    "--disable-strip",
+    "--libexecdir=/usr/lib/ssh",
+    "--sysconfdir=/etc/ssh",
+    "--with-default-path='/usr/local/sbin:/usr/local/bin:/usr/bin'",
+    "--with-libedit",
+    "--with-pam",
+    "--with-pid-dir=/run",
+    "--with-privsep-path=/usr/share/empty.sshd",
+    "--with-privsep-user=nobody",
+    "--with-security-key-builtin",
+    "--with-ssl-engine",
+    "--with-xauth=/usr/bin/xauth",
+    "--without-zlib-version-check",
+]
+post_install = [
+    "install -Dm644 ../sshd.pam $DESTDIR/etc/pam.d/sshd",
+    "install -D -m644 ../sshd.confd $DESTDIR/etc/conf.d/sshd",
+    "install -Dm755 ./contrib/ssh-copy-id $DESTDIR/usr/bin/ssh-copy-id",
+    "install -Dm644 ../sshd.nft $DESTDIR/usr/share/nftables.avail/50_sshd.nft",
+    "mkdir -p $DESTDIR/etc/ssh/ssh_config.d",
+    "mkdir -p $DESTDIR/etc/ssh/sshd_config.d",
+    "install -Dm755 contrib/findssl.sh -t $DESTDIR/usr/bin/",
+    "install -Dm644 contrib/ssh-copy-id.1 -t $DESTDIR/usr/share/man/man1/",
+]
+skip_tests = true
+keep = [ "etc/pam.d/sshd", "etc/conf.d/sshd" ]
+
+[dependencies]
+build = [
+    "linux-headers",
+    "libfido2",
+]
+optional = [
+    "libfido2",
+    "sh",
+    "x11-ssh-askpass",
+    "xorg-xauth",
+]
+runtime = [
+    "glibc",
+    "libedit",
+    "libxcrypt",
+    "openssl",
+    "pam",
+    "zlib-ng",
+]
+
+[package]
+description = "SSH protocol implementation for remote login, command execution and file transfer"
+homepage = "https://www.openssh.com/portable.html"
+license = [
+    "0BSD",
+    "BSD-2-Clause",
+    "BSD-3-Clause",
+    "ISC",
+    "LicenseRef-Public-Domain",
+    "MIT",
+]
+name = "openssh"
+version = "10.2p1"
+
+[[source]]
+extract_dir = "$name-$version"
+sha256 = "ccc42c0419937959263fa1dbd16dafc18c56b984c03562d2937ce56a60f798b2"
+url = "https://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/$name-$version.tar.gz"
+
+[[manual_sources]]
+files = [ "sshd.initd", "sshd.confd", "sshd.nft", "sshd.pam" ]