Prevent double tapping.

Only save FPUs once to carbStorage.
Will speed up the UI significantly and will prevent the inadvertently double tapping and also avoid unnecessary writing to disc and coding of JSONs.

FreeAPS/Sources/Modules/AddCarbs/AddCarbsStateModel.swift

@@ -60,22 +60,28 @@ extension AddCarbs {
                 // Group and Identify all FPUs together
                 let fpuID = UUID().uuidString
 
-                // Loop and save all carb entries
+                // Create an array of all future carb equivalents.
+                var futureCarbArray = [CarbsEntry]()
                 while carbEquivalents > 0, numberOfEquivalents > 0 {
+                    
                     if firstIndex {
                         useDate = useDate.addingTimeInterval(delay.minutes.timeInterval)
                         firstIndex = false
                     } else { useDate = useDate.addingTimeInterval(interval.minutes.timeInterval) }
-                    carbsStorage.storeCarbs([
-                        CarbsEntry(
-                            id: UUID().uuidString, createdAt: useDate, carbs: equivalent,
-                            enteredBy: CarbsEntry.manual, isFPU: true, fpuID: fpuID
-                        )
-                    ])
+
+                    let eachCarbEntry = CarbsEntry(
+                        id: UUID().uuidString, createdAt: useDate, carbs: equivalent, enteredBy: CarbsEntry.manual, isFPU: true,
+                        fpuID: fpuID
+                    )
+                    futureCarbArray.append(eachCarbEntry)
                     numberOfEquivalents -= 1
                 }
+                // Save the array
+                if carbEquivalents > 0 {
+                    carbsStorage.storeCarbs(futureCarbArray)
+                }
             } // ------------------------- END OF TPU ----------------------------------------
-            
+
             // Store the real carbs
             if carbs > 0 {
                 carbsStorage