extract links, delete incoming msg, add sender to reply

bot/exception.py

@@ -0,0 +1,9 @@
+class UrlRemoverNotImplementedException(Exception):
+    def __init__(self, domain: str):
+        self.__base_message = "Url remover for domain not implemented"
+        self.domain = domain
+        super().__init__(self.__base_message)
+
+    
+    def __str__(self):
+        return f'{self.__base_message}: {self.domain}'