Create from usage (function/property): Suggest separate actions for extensions and non-extension declarations

#KT-6023 Fixed

idea/testData/quickfix/createFromUsage/createClass/callExpression/beforeCallWithLibClassQualifier.kt

@@ -1,5 +1,5 @@
 // "Create class 'Foo'" "false"
-// ACTION: Create function 'Foo'
+// ACTION: Create extension function 'Foo'
 // ACTION: Replace with infix function call
 // ACTION: Split property declaration
 // ERROR: Unresolved reference: Foo

idea/testData/quickfix/createFromUsage/createClass/callExpression/callWithJavaClassReceiver.before.Main.kt

@@ -1,5 +1,5 @@
 // "Create class 'Foo'" "false"
-// ACTION: Create function 'Foo'
+// ACTION: Create extension function 'Foo'
 // ACTION: Convert to expression body
 // ERROR: Unresolved reference: Foo
 

idea/testData/quickfix/createFromUsage/createClass/callExpression/typeArguments/beforeExtension.kt

@@ -1,5 +1,5 @@
 // "Create class 'Foo'" "false"
-// ACTION: Create function 'Foo'
+// ACTION: Create extension function 'Foo'
 // ERROR: Unresolved reference: Foo
 
 class A<T>(val items: List<T>) {