[partition] Move SwapChoice to another namespace

- The choice of swap needs to be handled in more places,
   so make the enum available in the partition module core instead
   of just inside the choice page.

src/modules/partition/core/PartitionActions.h

@@ -50,6 +50,23 @@ void doReplacePartition( PartitionCoreModule* core,
                          Device* dev,
                          Partition* partition,
                          const QString& luksPassphrase = QString() );
-}
+
+/** @brief Namespace for enums
+ *
+ * This namespace houses non-class enums.....
+ */
+namespace Choices
+{
+    /** @brief Ccchoice of swap (size and type) */
+    enum SwapChoice
+    {
+        NoSwap,     // don't create any swap, don't use any
+        ReuseSwap,  // don't create, but do use existing
+        SmallSwap,  // up to 8GiB of swap
+        FullSwap,   // ensureSuspendToDisk -- at least RAM size
+        SwapFile    // use a file (if supported)
+    };
+}  // namespace Choices
+}  // namespace PartitionActions
 
 #endif // PARTITIONACTIONS_H