Update the reflection config while dealing with the metadata-extractor

While this is still not the full solution, most of my test files are being
handled properly.

There is still work to be done to get the same behavior than on the JVM.

build.sbt

@@ -46,8 +46,10 @@ lazy val root = (project in file("."))
       "-H:+AddAllCharsets"
     ),
     // To generate this file, run "sbt console",
-    // and then, "net.wiringbits.myphototimeline.util.GenerateNativeReflectionConfig.metadataExtractorReflectConfig"
-    // Paste the output to the file specified below
+    // and then, "net.wiringbits.myphototimeline.util.GenerateNativeReflectionConfig.generateConfigFile()"
+    // That's enough to regenerated the config file.
+    //
+    // TODO: Generate such config automatically before building the native image
     nativeImageOptions ++= List(
       "-H:ReflectionConfigurationFiles=etc/metadata-extractor-reflect-config.json"
     ),