Analysis API: rename KtCallableSymbol.type -> returnType

analysis/analysis-api/testData/symbols/symbolByPsi/enum.txt

@@ -5,8 +5,8 @@ KtEnumEntrySymbol:
   name: Y
   origin: SOURCE
   receiverType: null
+  returnType: X
   symbolKind: CLASS_MEMBER
-  type: X
   deprecationStatus: null
 
 KtEnumEntrySymbol:
@@ -16,8 +16,8 @@ KtEnumEntrySymbol:
   name: Z
   origin: SOURCE
   receiverType: null
+  returnType: X
   symbolKind: CLASS_MEMBER
-  type: X
   deprecationStatus: null
 
 KtNamedClassOrObjectSymbol:
@@ -39,4 +39,4 @@ KtNamedClassOrObjectSymbol:
   symbolKind: TOP_LEVEL
   typeParameters: []
   visibility: Public
-  deprecationStatus: null
+  deprecationStatus: null