Add small size category for argument input views.

We will use this for structs where we may want to show a lot of fields in a small space.

Classes/Editing/Argument Input Views/FLEXArgumentInputTextView.m

@@ -61,6 +61,10 @@
             numberOfInputLines = 2;
             break;
             
+        case FLEXArgumentInputViewSizeSmall:
+            numberOfInputLines = 1;
+            break;
+            
         case FLEXArgumentInputViewSizeLarge:
             numberOfInputLines = 8;
             break;

Classes/Editing/Argument Input Views/FLEXArgumentInputView.h

@@ -10,6 +10,7 @@
 
 typedef NS_ENUM(NSUInteger, FLEXArgumentInputViewSize) {
     FLEXArgumentInputViewSizeDefault = 0,
+    FLEXArgumentInputViewSizeSmall,
     FLEXArgumentInputViewSizeLarge
 };