CLI: Fix bug in aiida-quantumespresso workflow launc pw-base (#1039)

The command would not specify the `CONTROL` key for the input parameters
resulting in an exception in the upload step. This was not discovered by
tests because the workflow is not actually run and the exception is only
hit when the calcjob is actually executed.

src/aiida_quantumespresso/cli/workflows/pw/base.py

@@ -42,6 +42,9 @@ def launch_workflow(
     cutoff_wfc, cutoff_rho = pseudo_family.get_recommended_cutoffs(structure=structure, unit='Ry')
 
     parameters = {
+        'CONTROL': {
+            'calculation': 'scf',
+        },
         'SYSTEM': {
             'ecutwfc': ecutwfc or cutoff_wfc,
             'ecutrho': ecutrho or cutoff_rho,