Kapt: Add Kotlin location to diagnostics reported in Kapt stubs

plugins/kapt3/kapt3-compiler/testData/converter/jvmStaticFieldInParent.txt

@@ -1,14 +1,17 @@
 @kotlin.Metadata()
+@kapt.internal.KaptMetadata()
 public final class Test {
     @org.jetbrains.annotations.NotNull()
     private static final java.lang.String test = "";
     public static final Test.A A = null;
 
+    @kapt.internal.KaptSignature(value = "<init>()V")
     public Test() {
         super();
     }
 
     @org.jetbrains.annotations.NotNull()
+    @kapt.internal.KaptSignature(value = "getTest()Ljava/lang/String;")
     public static final java.lang.String getTest() {
         return null;
     }
@@ -16,16 +19,37 @@ public final class Test {
     @kotlin.Metadata()
     public static final class A {
 
+        @kapt.internal.KaptSignature(value = "test$annotations()V")
         public static void test$annotations() {
         }
 
         @org.jetbrains.annotations.NotNull()
+        @kapt.internal.KaptSignature(value = "getTest()Ljava/lang/String;")
         public final java.lang.String getTest() {
             return null;
         }
 
+        @kapt.internal.KaptSignature(value = "<init>()V")
         private A() {
             super();
         }
     }
 }
+
+////////////////////
+
+package kapt.internal;
+
+public @interface KaptMetadata {
+
+    public java.lang.String value();
+}
+
+////////////////////
+
+package kapt.internal;
+
+public @interface KaptSignature {
+
+    public java.lang.String value();
+}