[ObjCExport] Add inner classes translation

KT-66339

native/objcexport-header-generator/test/org/jetbrains/kotlin/backend/konan/tests/ObjCExportHeaderGeneratorTest.kt

@@ -356,6 +356,21 @@ class ObjCExportHeaderGeneratorTest(private val generator: HeaderGenerator) {
         doTest(headersTestDataDir.resolve("suspendFunction"))
     }
 
+    @Test
+    fun `test - innerClass`() {
+        doTest(headersTestDataDir.resolve("innerClass"))
+    }
+
+    /**
+     * Works except properties sorting with special name [org.jetbrains.kotlin.name.Name.special]
+     * See KT-66510
+     */
+    @Test
+    @TodoAnalysisApi
+    fun `test - innerClassWithExtensionFunction`() {
+        doTest(headersTestDataDir.resolve("innerClassWithExtensionFunction"))
+    }
+
     private fun doTest(root: File, configuration: Configuration = Configuration()) {
         if (!root.isDirectory) fail("Expected ${root.absolutePath} to be directory")
         val generatedHeaders = generator.generateHeaders(root, configuration).toString()