Add managed UIKit iOS client

dotnet/build-native-ios.sh

@@ -0,0 +1,33 @@
+#!/bin/zsh
+set -euo pipefail
+
+script_dir=${0:A:h}
+build_one() {
+    local sdk=$1
+    local rid=$2
+    local sdk_path
+    sdk_path=$(xcrun --sdk "$sdk" --show-sdk-path)
+    local compiler
+    compiler=$(xcrun --sdk "$sdk" --find clang)
+    local build_dir="$script_dir/artifacts/native-build-$rid-cmake"
+    cmake -S "$script_dir/native" -B "$build_dir" \
+        -DCMAKE_SYSTEM_NAME=iOS \
+        -DCMAKE_C_COMPILER="$compiler" \
+        -DCMAKE_OSX_SYSROOT="$sdk_path" \
+        -DCMAKE_OSX_ARCHITECTURES=arm64 \
+        -DCMAKE_OSX_DEPLOYMENT_TARGET=18.0 \
+        -DVOICECAT_DOTNET_RID="$rid" \
+        -DVOICECAT_BUNDLED_OPUS=ON
+    cmake --build "$build_dir" --config Release --target voicecat_media --parallel 2
+    cmake --install "$build_dir" --config Release \
+        --component DotnetMedia --prefix "$script_dir/artifacts/native"
+    local staged="$script_dir/artifacts/native/runtimes/$rid/native/libvoicecat_media.a"
+    local opus="$build_dir/_deps/opus-build/libopus.a"
+    local rnnoise="$build_dir/librnnoise.a"
+    local combined="$staged.combined"
+    xcrun --sdk "$sdk" libtool -static -o "$combined" "$build_dir/libvoicecat_media.a" "$opus" "$rnnoise"
+    mv "$combined" "$staged"
+}
+
+build_one iphoneos ios-arm64
+build_one iphonesimulator iossimulator-arm64