PSA_KEY_PRODUCTION_PARAMETERS_INIT macro

The default production parameters for key generation or key derivation. Calling psa_generate_key_ext() or psa_key_derivation_output_key_ext() with `params=PSA_KEY_PRODUCTION_PARAMETERS_INIT` and `params_data_length == 0` is equivalent to calling psa_generate_key() or psa_key_derivation_output_key() respectively.