Add support for iOS and macOS via MoltenVK.

xcode/ios/Resources/Main.storyboard

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="9060" systemVersion="15A279b" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="vmV-Wi-8wg">
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="9051"/>
+    </dependencies>
+    <scenes>
+        <!--Demo View Controller-->
+        <scene sceneID="UPC-Y9-dN2">
+            <objects>
+                <viewController id="vmV-Wi-8wg" customClass="DemoViewController" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="klr-UD-pWY"/>
+                        <viewControllerLayoutGuide type="bottom" id="lMV-Es-kLU"/>
+                    </layoutGuides>
+                    <view key="view" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" id="xKx-Gc-5Is" customClass="DemoView">
+                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <animations/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="ERB-qy-6pP" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="404" y="555"/>
+        </scene>
+    </scenes>
+</document>