KT-5524 Support [platformName] annotation for class members

@platformName is now supported for final non-overriding class member functions
(including property accessors).
Front-end provides diagnostics for inapplicable annotation cases.
Code generation updated:
- ignore kotlin.platform.platformName annotation for Java class methods;
- bridges generation generates proper JVM declarations in case of methods renamed with @platformName.
@platformName-related tests added.

#KT-5524 Fixed

compiler/tests/org/jetbrains/kotlin/codegen/generated/BlackBoxWithJavaCodegenTestGenerated.java

@@ -59,6 +59,12 @@ public class BlackBoxWithJavaCodegenTestGenerated extends AbstractBlackBoxCodege
         doTestWithJava(fileName);
     }
 
+    @TestMetadata("platformName")
+    public void testPlatformName() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("compiler/testData/codegen/boxWithJava/platformName/");
+        doTestWithJava(fileName);
+    }
+
     @TestMetadata("referenceToJavaFieldOfKotlinSubclass")
     public void testReferenceToJavaFieldOfKotlinSubclass() throws Exception {
         String fileName = JetTestUtils.navigationMetadata("compiler/testData/codegen/boxWithJava/referenceToJavaFieldOfKotlinSubclass/");

compiler/tests/org/jetbrains/kotlin/codegen/generated/BlackBoxWithStdlibCodegenTestGenerated.java

@@ -2194,6 +2194,12 @@ public class BlackBoxWithStdlibCodegenTestGenerated extends AbstractBlackBoxCode
             doTestWithStdlib(fileName);
         }
 
+        @TestMetadata("classMembers.kt")
+        public void testClassMembers() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("compiler/testData/codegen/boxWithStdlib/platformNames/classMembers.kt");
+            doTestWithStdlib(fileName);
+        }
+
         @TestMetadata("functionName.kt")
         public void testFunctionName() throws Exception {
             String fileName = JetTestUtils.navigationMetadata("compiler/testData/codegen/boxWithStdlib/platformNames/functionName.kt");