Kapt: Add Kotlin location to diagnostics reported in Kapt stubs

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

@@ -1,4 +1,5 @@
 @kotlin.Metadata()
+@kapt.internal.KaptMetadata()
 public final class JvmStaticTest {
     private final byte three = (byte)3;
     private final char d = 'D';
@@ -7,18 +8,22 @@ public final class JvmStaticTest {
     public static final char c = 'C';
     public static final JvmStaticTest.Companion Companion = null;
 
+    @kapt.internal.KaptSignature(value = "getThree()B")
     public final byte getThree() {
         return 0;
     }
 
+    @kapt.internal.KaptSignature(value = "getD()C")
     public final char getD() {
         return '\u0000';
     }
 
+    @kapt.internal.KaptSignature(value = "<init>()V")
     public JvmStaticTest() {
         super();
     }
 
+    @kapt.internal.KaptSignature(value = "getOne()I")
     public static final int getOne() {
         return 0;
     }
@@ -26,19 +31,41 @@ public final class JvmStaticTest {
     @kotlin.Metadata()
     public static final class Companion {
 
+        @kapt.internal.KaptSignature(value = "one$annotations()V")
         public static void one$annotations() {
         }
 
+        @kapt.internal.KaptSignature(value = "getOne()I")
         public final int getOne() {
             return 0;
         }
 
+        @kapt.internal.KaptSignature(value = "getTwo()I")
         public final int getTwo() {
             return 0;
         }
 
+        @kapt.internal.KaptSignature(value = "<init>()V")
         private Companion() {
             super();
         }
     }
 }
+
+////////////////////
+
+package kapt.internal;
+
+public @interface KaptMetadata {
+
+    public java.lang.String value();
+}
+
+////////////////////
+
+package kapt.internal;
+
+public @interface KaptSignature {
+
+    public java.lang.String value();
+}