Create from usage: make new member function/property private by default

#KT-6689 Fixed

idea/testData/quickfix/createFromUsage/createFunction/get/afterCreateGetFromUsage1.kt

@@ -4,7 +4,7 @@ class Foo<T> {
         val z: Iterable<T> = y[""]
     }
 
-    fun get(s: String): T {
+    private fun get(s: String): T {
         throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/get/afterCreateGetFromUsage10.kt

@@ -4,7 +4,7 @@ class Foo<T> {
         val z: Iterable<T> = y["", w]
     }
 
-    fun get(s: String, w: T): T {
+    private fun get(s: String, w: T): T {
         throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/get/afterCreateGetFromUsage13.kt

@@ -8,7 +8,7 @@ class Foo<T> {
         bar(z)
     }
 
-    fun <V> get(s: String, w: ArrayList<V>): String {
+    private fun <V> get(s: String, w: ArrayList<V>): String {
         throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/get/afterCreateGetFromUsage3.kt

@@ -4,7 +4,7 @@ class Foo<T> {
         val z: Iterable<S> = y[""]
     }
 
-    fun get(s: String): T {
+    private fun get(s: String): T {
         throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/get/afterCreateGetFromUsage4.kt

@@ -4,7 +4,7 @@ class Foo<T, S: Iterable<T>> {
         val z: U = y[""]
     }
 
-    fun get(s: String): T {
+    private fun get(s: String): T {
         throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/get/afterCreateGetFromUsage5.kt

@@ -4,7 +4,7 @@ class Foo<T> {
         val z: Iterable<T> = y["", w]
     }
 
-    fun <V> get(s: String, w: Iterable<V>): T {
+    private fun <V> get(s: String, w: Iterable<V>): T {
         throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/get/afterCreateGetFromUsage7.kt

@@ -6,7 +6,7 @@ class Foo<T> {
         val z: Iterable<T> = y["", w, v]
     }
 
-    fun <V, T1> get(s: String, w: ArrayList<V>, v: T1): T {
+    private fun <V, T1> get(s: String, w: ArrayList<V>, v: T1): T {
         throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/get/afterCreateGetFromUsage8.kt

@@ -6,7 +6,7 @@ class Foo<T> {
         val z: Iterable<T> = y["", w]
     }
 
-    fun get(s: String, w: T): T {
+    private fun get(s: String, w: T): T {
         throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/get/afterCreateGetFromUsage9.kt

@@ -6,7 +6,7 @@ class Foo<S> {
         val z: Iterable<T> = y["", w]
     }
 
-    fun get(s: String, w: S): S {
+    private fun get(s: String, w: S): S {
         throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }