Insights: New datasources and features for querying your data

We've improved Insights and added new datasources, functionality and syntax support.

New datasources include:

• Runs — Query your function runs and their associated data, such as input, output, and execution time.
• Steps/StepAttempts — Query the individual steps within your function runs, including their status, output, and execution time.
• Extended Trace Spans — Query the spans associated with your function runs, providing more information about the execution of your functions.

New features added:

• Insights AI — An assistant to help write your queries from plain English descriptions.
• Schema Explorer — A sidebar utility that shows available tables and event schemas.

Also added support for new functions and improved syntax support to make it easier to query your data.