Add sorting functionality for prospects with new ProspectSortControl component

FoodsharingSiegen.Contracts/StorageKeys.cs

@@ -12,6 +12,26 @@ namespace FoodsharingSiegen.Contracts
         /// </summary>
         public const string ProspectFilter = "ProspectFilter";
 
+        /// <summary>
+        ///     Represents the storage key used for prospect sorting preferences.
+        /// </summary>
+        public const string SortProspects = "SortProspects";
+
+        /// <summary>
+        ///     Represents the storage key used for sorting all prospects.
+        /// </summary>
+        public const string SortProspectsAll = "SortProspectsAll";
+
+        /// <summary>
+        ///     Represents the storage key used for sorting completed prospects.
+        /// </summary>
+        public const string SortProspectsDone = "SortProspectsDone";
+
+        /// <summary>
+        ///     Represents the storage key used for sorting prospects pending verification.
+        /// </summary>
+        public const string SortProspectsVerify = "SortProspectsVerify";
+
         /// <summary>
         ///     The token key
         /// </summary>