Prepare airdrop support

SFI/Info.plist

@@ -6,6 +6,21 @@
 	<array>
 		<string>io.nekohasekai.sfa.update_profiles</string>
 	</array>
+	<key>CFBundleURLTypes</key>
+	<array>
+		<dict>
+			<key>CFBundleTypeRole</key>
+			<string>Viewer</string>
+			<key>CFBundleURLIconFile</key>
+			<string>AppIcon.icns</string>
+			<key>CFBundleURLName</key>
+			<string>sing-box</string>
+			<key>CFBundleURLSchemes</key>
+			<array>
+				<string>sing-box</string>
+			</array>
+		</dict>
+	</array>
 	<key>ITSAppUsesNonExemptEncryption</key>
 	<false/>
 	<key>NSUbiquitousContainers</key>

SFI/MainView.swift

@@ -1,4 +1,5 @@
 import ApplicationLibrary
+import Libbox
 import Library
 import SwiftUI
 
@@ -14,6 +15,8 @@ struct MainView: View {
     @State private var serviceNotificationContent = ""
     @State private var serviceNotificationPresented = false
 
+    @State private var importRemoteProfile: LibboxImportRemoteProfile?
+
     var body: some View {
         viewBuilder {
             if profileLoading {
@@ -54,7 +57,22 @@ struct MainView: View {
         .environment(\.selection, $selection)
         .environment(\.extensionProfile, $extensionProfile)
         .environment(\.logClient, $logClient)
-        .preferredColorScheme(.dark)
+        .environment(\.importRemoteProfile, $importRemoteProfile)
+        .handlesExternalEvents(preferring: [], allowing: ["*"])
+        .onOpenURL(perform: openURL)
+    }
+
+    private func openURL(url: URL) {
+        if url.host == "import-remote-profile" {
+            var error: NSError?
+            importRemoteProfile = LibboxParseRemoteProfileImportLink(url.absoluteString, &error)
+            if error != nil {
+                return
+            }
+            if selection != .profiles {
+                selection = .profiles
+            }
+        }
     }
 
     private func loadProfile() async {