Apply suggestions from code review

Co-authored-by: Joren Hammudoglu <[email protected]>

Author: lucascolley

src/metrology_apis/__init__.py

@@ -21,7 +21,7 @@
 
 
 @runtime_checkable
-class MetrologyNamespace[Q: QT, V: VT, U: UT, D: Dimension](Protocol):
+class MetrologyNamespace[Q: QT = Any, V: VT = Any, U: UT = Any, D: Dimension = Any](Protocol):
     @staticmethod
     def asdimension(obj: str | D) -> D: ...
 
@@ -110,7 +110,7 @@ def __rtruediv__(self, other: Self, /) -> Self: ...
 
 
 @runtime_checkable
-class Quantity[V, U: UT, D: Dimension](Protocol):
+class Quantity[V = Any, U: UT = Any, D: Dimension = Any](Protocol):
     def __metrology_namespace__(
         self, /, *, api_version: str | None = None
     ) -> MetrologyNamespace[Self, V, U, D]: