pykirdy: Update handling of json objects received

- Accept new line delimited json in read_response()

pykirdy/driver/kirdy_async.py

@@ -622,20 +622,26 @@ class Kirdy:
         self._reader = None
         self._writer = None
 
-    async def _read_response(self):
+    async def _read_response(self, buffer_size=16384):
+        """
+            Decode newline delimited Json objects and return the latest json received inside the buffer.
+                - buffer_size: Integer
+        """
+
         try:
-            response = await asyncio.wait_for(self._reader.read(1024), self.timeout)
+            raw_response = await asyncio.wait_for(self._reader.read(buffer_size), self.timeout)
         except asyncio.exceptions.TimeoutError:
             return {
                 "msg_type": "Internal Timeout"
             }
-        response = response.decode('utf-8', errors='ignore')
-        try:
-            return json.loads(response)
-        except json.decoder.JSONDecodeError:
-            return {
-                "msg_type": "Internal Invalid"
-            }
+
+        response = raw_response.decode('utf-8', errors='ignore').split("\n")
+        for item in reversed(response):
+            try:
+                return json.loads(item)
+            except json.decoder.JSONDecodeError:
+                pass
+        return { "msg_type": "Internal No json object found in response" }
 
     # If the cmd involves a cmd specific data type, 
     #   checking is done separately within the functions being called