feat: port MeasureTheory.Measure.Hausdorff (#4886)

Co-authored-by: Moritz Firsching <firsching@google.com>

Author: int-y1

Mathlib.lean

@@ -2143,6 +2143,7 @@ import Mathlib.MeasureTheory.Measure.Haar.InnerProductSpace
 import Mathlib.MeasureTheory.Measure.Haar.NormedSpace
 import Mathlib.MeasureTheory.Measure.Haar.OfBasis
 import Mathlib.MeasureTheory.Measure.Haar.Quotient
+import Mathlib.MeasureTheory.Measure.Hausdorff
 import Mathlib.MeasureTheory.Measure.Lebesgue.Basic
 import Mathlib.MeasureTheory.Measure.Lebesgue.Complex
 import Mathlib.MeasureTheory.Measure.Lebesgue.EqHaar