[FEATURE]Refactor Catalyst visitor to match AST Builder composition

[YANG-DB]

Is your feature request related to a problem?
We would like to refactor the CatalystQueryPlanVisitor and separate it into two distinct visitors:

• Plan Visitor ( which extends AbstractNodeVisitor<LogicalPlan, CatalystPlanContext> )
• Expression Visitor (which extends AbstractNodeVisitor<Expression, CatalystPlanContext>)

This would match the existing PPL AST visitors composition:

• AstBuilder ( which extends OpenSearchPPLParserBaseVisitor)
• AstExpressionBuilder ( which extends OpenSearchPPLParserBaseVisitor )

In addition unify the ppl utils classes to match one of the following naming:

• *Transformer - transforms PPL (logical) expressions into Spark (logical) expressions
• *Utils - utility class

Do you have any additional context?
Add any other context or screenshots about the feature request here.