Add share extension, rework bookmarks model

Open in Yattee/Info.plist

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>NSExtension</key>
+	<dict>
+		<key>NSExtensionAttributes</key>
+		<dict>
+			<key>NSExtensionActivationRule</key>
+			<string>SUBQUERY (
+    	extensionItems,
+    	$extensionItem,
+    	SUBQUERY (
+        $extensionItem.attachments,
+        $attachment,
+				ANY $attachment.registeredTypeIdentifiers UTI-CONFORMS-TO &quot;public.url&quot;
+    	).@count == $extensionItem.attachments.@count
+			).@count &gt; 0</string>
+		</dict>
+		<key>NSExtensionPointIdentifier</key>
+		<string>com.apple.share-services</string>
+		<key>NSExtensionPrincipalClass</key>
+		<string>$(PRODUCT_MODULE_NAME).ShareViewController</string>
+	</dict>
+</dict>
+</plist>