Improve startup time (#822)

Profiles were loaded after reading receipt, which took at least a second
on iOS.

Potential regression from #821

Passepartout/Library/Sources/CommonLibrary/Business/ExtendedTunnel.swift

@@ -99,20 +99,24 @@ extension ExtendedTunnel {
     }
 
     public func prepare(purge: Bool) async throws {
+        pp_log(.app, .notice, "Prepare tunnel and purge stale data (\(purge))...")
         try await tunnel.prepare(purge: purge)
     }
 
     public func install(_ profile: Profile) async throws {
+        pp_log(.app, .notice, "Install profile \(profile.id)...")
         let newProfile = try processedProfile(profile)
         try await tunnel.install(newProfile, connect: false, title: processedTitle)
     }
 
     public func connect(with profile: Profile) async throws {
+        pp_log(.app, .notice, "Connect to profile \(profile.id)...")
         let newProfile = try processedProfile(profile)
         try await tunnel.install(newProfile, connect: true, title: processedTitle)
     }
 
     public func disconnect() async throws {
+        pp_log(.app, .notice, "Disconnect...")
         try await tunnel.disconnect()
     }
 

Passepartout/Library/Sources/UILibrary/Business/AppContext.swift

@@ -67,14 +67,19 @@ public final class AppContext: ObservableObject {
             return
         }
         isActivating = true
+        pp_log(.app, .notice, "Application became active")
         Task {
-            do {
-                pp_log(.app, .notice, "Application became active")
-                await iapManager.reloadReceipt()
-                pp_log(.app, .notice, "Prepare tunnel and purge stale data...")
-                try await tunnel.prepare(purge: true)
-            } catch {
-                pp_log(.app, .fault, "Unable to prepare tunnel: \(error)")
+            await withTaskGroup(of: Void.self) { group in
+                group.addTask {
+                    do {
+                        try await self.tunnel.prepare(purge: true)
+                    } catch {
+                        pp_log(.app, .fault, "Unable to prepare tunnel: \(error)")
+                    }
+                }
+                group.addTask {
+                    await self.iapManager.reloadReceipt()
+                }
             }
             isActivating = false
         }