[sets, targest] fixed missing default for point option

Fixes #29

Author: MrClock8163

src/instrumentman/setmeasurement/__init__.py

@@ -75,7 +75,8 @@
     help=(
         "Target to use from loaded target definition "
         "(set multiple times to use specific points, leave unset to use all)"
-    )
+    ),
+    default=()
 )
 def cli_measure(**kwargs: Any) -> None:
     """

src/instrumentman/station/__init__.py

@@ -48,7 +48,8 @@
         "(set multiple times to use specific points, leave unset to use all)"
     ),
     type=str,
-    multiple=True
+    multiple=True,
+    default=()
 )
 @option(
     "--height",