Feature/better errors

[danfunk]

• Added a top level SpiffWorklowException that all exceptions inherit from.
• All SpiffWorlfowExceptions have an add_note() function. This is a standard method for all exceptions starting in python 3.11. We'll introduce it now for all of our exceptions. In this way, as an error is raised, we can catch it, and append notes for added context. It is currently used in several places, such as to add "Did you mean...." when creating WorkflowTaskExecptions, or to tell people the error occurred in a PreScript, or say what row of a DMN Table the error happened in.
• Switched argument order in WorkflowException, WorkflowTaskException - they now always takes a string message as the first argument, and named arguments thereafter, making them more consistent with all other error messages in Python.
• Consistently raise ValidationExceptions whenever we encounter an error anywhere during parsing of xml.
• Removed The BPMN/WorkflowTaskExecException, replaced with a standard WorkflowTaskException. There is nothing BPMN Specific in the logic anymore, so it just siplified out.
• Consolidated error message logic as high up the error class hierarchy as possible. So that things like "Did you mean" just get added by default whenever possible.
• Better Error messages for DMN (include row number as a part of the error information)
• Validators now catch more general exceptions from lxml

[jbirddog]

Just wanted to double check you meant for graphics/spiffworkflow_logo_ideas.svg to be included.

[sonarcloud]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
4 Code Smells

68.5% Coverage
0.0% Duplication