feat(create): add styling instance types

src/create.luau

@@ -110,6 +110,13 @@ export type Instances = {
     ColorValue: Color3Value,
     VectorValue: Vector3Value,
     CFrameValue: CFrameValue,
+
+    -- styling
+    StyleSheet: StyleSheet,
+    StyleRule: StyleRule,
+    StyleDerive: StyleDerive,
+    StyleLink: StyleLink,
+    StyleQuery: StyleQuery,
 }
 
 export type function Properties(instance: type?)