Add changelog

Documentation/release/dev/deprecate-vtkTypedDataArray.md

+## Deprecate vtkTypedDataArray related classes
+
+The following classed have been deprecated:
+
+1. `vtkTypedDataArray`: Use vtkGenericDataArray instead.
+2. `vtkTypedDataArrayIterator`: No longer needed.
+3. `vtkMappedDataArray`: Use the SetArray functionality of `vtkAOSDataArrayTemplate` for 1 component
+   or `vtkSOADataArrayTemplate` for more instead.
+4. `vtkCPExodusIINodalCoordinatesTemplate`: Use the SetArray functionality of `vtkAOSDataArrayTemplate` for 1 component
+   or `vtkSOADataArrayTemplate` for more instead.
+5. `vtkCPExodusIIResultsArrayTemplate`: Use the SetArray functionality of `vtkSOADataArrayTemplate` instead.