LogicalPlan serde is not yet implemented for Dml

[milenkovicm]

Is your feature request related to a problem or challenge?

At the moment INSERT INTO statement is not supported in ballista, test: https://github.com/apache/datafusion-ballista/blob/c28ccaf006c2e30f6bf5c67ca5873e12f6abea68/ballista/client/tests/context_unsupported.rs#L155 fails with:

Error: Internal(failed to serialize logical plan: Internal(LogicalPlan serde is not yet implemented for Dml))

LogicalPlan::Dml(DmlStatement) is does not support serde

Describe the solution you'd like

It would be great if LogicalPlan::Dml(DmlStatement {...} ) gets proto serde mapping

Describe alternatives you've considered

Alternative would be to implement LogicalPlan::Dml(DmlStatement {...} ) in ballista code

Additional context

No response