Fix PropDefault values extraction for Kotlin

[pavlospt]

• There was an issue with the current implementation if a user tried to use that same annotation prefixed with get.

e.g.: @get:PropDefault

The solution is to identify which is the case and fallback to the respective method that holds the @PropDefault annotation on the equivalent Java file.

With @get:

   @PropDefault(
      resType = ResType.DIMEN_SIZE,
      resId = 2131034112
   )
   @Nullable
   public final Float getImageAspectRatio() {
      return imageAspectRatio;
   }

Without @get:

   /** @deprecated */
   // $FF: synthetic method
   @PropDefault(
      resType = ResType.DIMEN_SIZE,
      resId = 2131034112
   )
   public static void imageAspectRatio$annotations() {
   }

[passy]

Great stuff! As this is getting more complex, would it be possible to add a test case for this in PropDefaultsExtractorTest? I'm not quite sure if this would just be a matter of essentially copying over the two examples you have there or if there's a lot of additional setup that would be required.

[pavlospt]

@passy we could copy the Java equivalent classes and use them as test cases!

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[passy]

Thanks!