Add resources-en for idea

#KT-38297 Fixed

idea/resources-en/intentionDescriptions/ConvertReceiverToParameterIntention/before.kt.template

@@ -0,0 +1,7 @@
+fun <spot>String</spot>.foo(n: Int): Int {
+    return length() - n
+}
+
+fun test() {
+    "1".foo(2)
+}