Unified log / API to retrieve all workflow invocations + errors

I'd like to access a log of all workflow executions (my event history) or errors so I can run analysis on them and observe patterns. The log would need to contain metadata like:

timestamp of execution
duration of workflow execution
success / failure state
workflow id
deployment id
(any other relevant data from `steps.trigger.context`)
timestamp of error (if error)
error object (if present)