feat: continuity of the continuous functional calculus in each variable (#24866)

Author: j-loreaux

Mathlib.lean

@@ -1311,6 +1311,7 @@ import Mathlib.Analysis.CStarAlgebra.CStarMatrix
 import Mathlib.Analysis.CStarAlgebra.Classes
 import Mathlib.Analysis.CStarAlgebra.CompletelyPositiveMap
 import Mathlib.Analysis.CStarAlgebra.ContinuousFunctionalCalculus.Basic
+import Mathlib.Analysis.CStarAlgebra.ContinuousFunctionalCalculus.Continuity
 import Mathlib.Analysis.CStarAlgebra.ContinuousFunctionalCalculus.Instances
 import Mathlib.Analysis.CStarAlgebra.ContinuousFunctionalCalculus.Integral
 import Mathlib.Analysis.CStarAlgebra.ContinuousFunctionalCalculus.Isometric