Create from Usage: Place extension properties after the usage and generate stub getter

#KT-11795 Fixed

idea/testData/quickfix/createFromUsage/createFunction/call/extensionByExtensionReceiver/extensionPropertyGetter.kt

@@ -1,5 +1,4 @@
 // "Create extension property 'A.foo'" "true"
-// ERROR: Property must be initialized
 class A(val n: Int)
 
 class B {

idea/testData/quickfix/createFromUsage/createFunction/call/extensionByExtensionReceiver/extensionPropertyGetter.kt.after

@@ -1,9 +1,11 @@
 // "Create extension property 'A.foo'" "true"
-// ERROR: Property must be initialized
 class A(val n: Int)
 
-private val A.foo: Boolean
-
 class B {
     val A.test: Boolean get() = foo
-}
+}
+
+private val A.foo: Boolean
+    get() {
+        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+    }

idea/testData/quickfix/createFromUsage/createFunction/call/extensionByExtensionReceiver/extensionPropertySetter.kt

@@ -1,5 +1,4 @@
 // "Create extension property 'A.foo'" "true"
-// ERROR: Property must be initialized
 class A(val n: Int)
 
 class B {

idea/testData/quickfix/createFromUsage/createFunction/call/extensionByExtensionReceiver/extensionPropertySetter.kt.after

@@ -1,13 +1,17 @@
 // "Create extension property 'A.foo'" "true"
-// ERROR: Property must be initialized
 class A(val n: Int)
 
-private var A.foo: Boolean
-
 class B {
     var A.test: Boolean
         get() = foo
         set(v: Boolean) {
             foo = v
         }
-}
+}
+
+private var A.foo: Boolean
+    get() {
+        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+    }
+    set() {
+    }