PSA return status coverage script

Add infrastructure to run unit tests and collect the return values for
every PSA API function that returns psa_status_t.

    ./tests/scripts/psa_collect_statuses.py >statuses.txt
diff --git a/tests/.gitignore b/tests/.gitignore
index 3c9b0cf..fbbd0df 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -7,3 +7,5 @@
 data_files/hmac_drbg_seed
 data_files/ctr_drbg_seed
 data_files/entropy_seed
+
+/instrument_record_status.h