Add reset-method to Kramer

src/mediactl/devices/kramer.py

@@ -32,6 +32,9 @@ class KramerVs411X(mediactl.WithLogger):
     def get_status(self) -> dict:
         return self.status
 
+    def reset(self):
+        self.status = {"active-input" : None }
+
     def switch(self, pin) -> Result[None, str]:
         if pin < 1 or pin > len(self.pins):
             return Err(