fix(CLI): set request value to call

Previously, even though the request was passed by reference, it was
copied and thus our changes never arrived in the call.

Now the API makes this clear by taking ownership, and the CLI code
sets the Request value lateron, explicitly.

Related to #76

src/mako/lib/util.py

@@ -379,7 +379,7 @@ def activity_input_type(schemas, p):
     if n == 'String':
         n = 'str'
     # pods are copied anyway
-    elif is_pod_property(p):
+    elif is_pod_property(p) or p.get(TREF):
         return n
     return '&%s' % n
 
@@ -535,7 +535,7 @@ def rust_copy_value_s(n, tn, p):
     nc = n + '.clone()'
     if tn == '&str':
         nc = n + '.to_string()'
-    elif is_pod_property(p):
+    elif is_pod_property(p) or p.get(TREF):
         nc = n
     return nc