Engine::get_evaluator should be fallible

[OussamaSaoudi-db]

Please describe why this is necessary.

One can construct an ExpressionEvaluator given an engine, input schema, expression transform, and output schema:

engine.get_expression_handler().get_evaluator(
            input_schema,
            expression,
            output_schema,
        );

An engine may eagerly perform validation to check that the columns in the expression exist in the input schema, or that the output types of the expression match the output schema. However, the engine cannot return a failure because get_evaluator(...) is infallible.

Describe the functionality you are proposing.

Change the signature of ExpressionHandler::get_evaluator to the following:

fn get_evaluator(
        &self,
        schema: SchemaRef,
        expression: Expression,
        output_type: DataType,
    ) -> DeltaResult<Arc<dyn ExpressionEvaluator>> 

Fix compiler errors at all call sites in the code and testss.

Additional context

No response

[cg-cognition]

Hey @OussamaSaoudi-db , I took a pass at fixing this issue (#577). I think there's a still a few questions around handling error propagation, would really appreciate your review!