feat(voice): add iOS VAD runtime support

apps/chanora_flutter/ios/Podfile

@@ -1,5 +1,5 @@
 # Uncomment this line to define a global platform for your project
-platform :ios, '13.0'
+platform :ios, '15.1'
 
 # CocoaPods analytics sends network stats synchronously affecting flutter build latency.
 ENV['COCOAPODS_DISABLE_STATS'] = 'true'
@@ -39,6 +39,7 @@ target 'Runner' do
   # flutter_rust_bridge can dlopen() it at runtime via FRB's
   # default `chanora_bridge.framework/chanora_bridge` lookup path.
   pod 'chanora_bridge', :path => '.'
+  pod 'onnxruntime-c', '1.22.0'
 
   flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
   target 'RunnerTests' do