Initial implementation of KT-8209 Support static member completion without writing the class name

idea/idea-completion/testData/handlers/basic/staticMembers/classObjectMethod.kt.after

@@ -0,0 +1,8 @@
+import kotlin.text.Regex
+
+fun foo() {
+    Regex.fromLiteral(<caret>)
+}
+
+// INVOCATION_COUNT: 2
+// ELEMENT_TEXT: "Regex.fromLiteral"