recreated json file handling as connector model, fixing #10 and introducing #8 and #7

src/connector.py

@@ -41,6 +41,11 @@ class JSONConnector(Connector):
         with open(self.json_file, "r") as f:
             return json.load(f)
 
+    def get_all_sorted_by(self, field: str, reverse=False) -> list:
+        with open(self.json_file, "r") as f:
+            data = json.load(f)
+        return sorted(data, key=lambda k: k[field], reverse=reverse)
+
     def get_by_id(self, record_id: int) -> dict:
         data = self.get_all()
         for record in data: