Support of Credential Store syntax for use with pre- and post-processing

Current Situation

• YADE supports replacement of values from a CredentialStore. This includes e.g. the host, user and password attributes using the syntax cs://some_path@title, cs://some_path@user, cs://some_path@password etc. or a custom field
• No replacement is supported with scripts for pre- and post-processing

Desired Behavior

• YADE should replace attribute values from the CredentialStore with the syntax ${cs://some_path@some_field} in any pre- and post-processing commands.
  • some_field can be any of the existing fields such as title, user etc. or a custom field when using KeePass 2