feat/skip_skills_in_dialog_transform

allow some skills to explicitly skip the dialog transformers

by default jokes skill is blacklisted

```
"dialog_transformers": {
    "blacklisted_skills": ["skill-ovos-icanhazdadjokes.openvoiceos"]
}
```

ovos_audio/service.py

@@ -278,9 +278,11 @@ def handle_speak(self, message):
         utterance = message.data['utterance']
 
         # allow dialog transformers to rewrite speech
-        utt2, message.context = self.dialog_transform.transform(dialog=utterance,
-                                                                context=message.context,
-                                                                sess=sess)
+        skill_id = message.data.get("meta", {}).get("skill") or message.context.get("skill_id")
+        if skill_id and skill_id not in self.dialog_transform.blacklisted_skills:
+            utt2, message.context = self.dialog_transform.transform(dialog=utterance,
+                                                                    context=message.context,
+                                                                    sess=sess)
         if utterance != utt2:
             LOG.debug(f"original dialog: {utterance}")
             LOG.info(f"dialog transformed to: {utt2}")

ovos_audio/transformers.py

@@ -16,6 +16,13 @@ def __init__(self, bus, config=None):
         self.config = config or Configuration().get("dialog_transformers", {})
         self.load_plugins()
 
+    @property
+    def blacklisted_skills(self):
+        # dialog should NEVER be rewritten if it comes from these skills
+        return self.config.get("blacklisted_skills",
+                               ["skill-ovos-icanhazdadjokes.openvoiceos"] # blacklist jokes by default
+                               )
+
     def load_plugins(self):
         for plug_name, plug in find_dialog_transformer_plugins().items():
             if plug_name in self.config: