added datetime for export file names

bitwardenBackup.py

@@ -10,6 +10,7 @@ import secrets
 import base64
 import optparse
 import hmac as pyhmac
+import datetime
 from kmip.core import enums
 from kmip.pie import client
 
@@ -19,6 +20,7 @@ script_name = os.path.basename(__file__)
 secrets_config_file = os.path.join(script_directory, "secrets.config")
 pykmip_client_config_file = os.path.join(script_directory, "conf", "client.conf")
 log_file = os.path.join(script_directory, "log.log")
+datetime_string = datetime.datetime.now().strftime("%Y%m%d-%H%M%S")
 
 if os_detected == "Windows":
     bitwarden_cli_executable = os.path.join(script_directory, "lib", "Bitwarden CLI", "bw.exe")