Add specific flag to assume full version in beta

To skip in-app testing.

Passepartout-iOS/Global/AppConstants+Flags.swift

@@ -36,6 +36,8 @@ extension AppConstants {
             #endif
         }
 
+        static var isBetaFullVersion = false
+
         static var isMockVPN = false {
             didSet {
                 VPN.isMockVPN = isMockVPN

Passepartout-iOS/Global/ProductManager.swift

@@ -140,7 +140,7 @@ class ProductManager: NSObject {
     }
 
     func isFullVersion() -> Bool {
-        guard !AppConstants.Flags.isBeta else {
+        if AppConstants.Flags.isBeta && AppConstants.Flags.isBetaFullVersion {
             return true
         }
         return purchasedFeatures.contains(.fullVersion)