Add dir loading for coherent feature

src/main/java/at/pcgamingfreaks/mkvaudiosubtitlechanger/config/ConfigLoader.java

@@ -28,7 +28,8 @@ public class ConfigLoader {
             new SetValidator(FORCED_KEYWORDS, false, true),
             new SetValidator(COMMENTARY_KEYWORDS, false, true),
             new SetValidator(EXCLUDED_DIRECTORY, false, true),
-            new AttributeConfigValidator()
+            new AttributeConfigValidator(),
+            new CoherentConfigValidator(COHERENT, false)
     );
 
     public static void initConfig(String[] args) {

src/main/java/at/pcgamingfreaks/mkvaudiosubtitlechanger/config/validator/CoherentConfigValidator.java

@@ -17,6 +17,6 @@ public class CoherentConfigValidator extends ConfigValidator<Integer> {
 
     @Override
     boolean isValid(Integer result) {
-        return result > 0;
+        return result >= 0;
     }
 }