implemented axis layout

src/Shared/HandyControl_Shared/Data/Flex/FlexContentAlignment.cs

@@ -2,11 +2,11 @@
 {
     public enum FlexContentAlignment
     {
+        Stretch,
         FlexStart,
         FlexEnd,
         Center,
         SpaceBetween,
-        SpaceAround,
-        Stretch
+        SpaceAround
     }
 }

src/Shared/HandyControl_Shared/Data/Flex/FlexDirection.cs

@@ -1,6 +1,6 @@
 namespace HandyControl.Data
 {
-    public enum FlexOrientation
+    public enum FlexDirection
     {
         Row,
         RowReverse,

src/Shared/HandyControl_Shared/Data/Flex/FlexItemsAlignment.cs

@@ -2,10 +2,10 @@
 {
     public enum FlexItemsAlignment
     {
+        Stretch,
         FlexStart,
         FlexEnd,
         Center,
-        Baseline,
-        Stretch
+        Baseline
     }
 }

src/Shared/HandyControl_Shared/Data/Flex/FlexWrap.cs

@@ -1,6 +1,6 @@
 namespace HandyControl.Data
 {
-    public enum FlexWrapping
+    public enum FlexWrap
     {
         NoWrap,
         Wrap,