… `TreeNode`s and use them in a few examples

- add `transform_down_with_payload()`, `transform_up_with_payload()`, `transform_with_payload()` and use it in `EnforceSorting` as an example

…visit()`, `visit_down()`, `transform()`, `transform_down()`, `transform_up()`, `transform_with_payload()`, `transform_down_with_payload()` and `transform_up_with_payload()` functions on `TreeNode`, others can be deprecated and removed once no longer used

…yload()` in its pre-order transform (`f_down`) function

# Conflicts:
#	datafusion/expr/src/expr.rs
#	datafusion/expr/src/utils.rs

…ult for `Expr`

…ransform_up_with_payload` related changes

# Conflicts:
#	datafusion/common/src/tree_node.rs
#	datafusion/core/src/datasource/physical_plan/parquet/row_groups.rs
#	datafusion/core/src/physical_optimizer/enforce_distribution.rs
#	datafusion/core/src/physical_optimizer/enforce_sorting.rs
#	datafusion/core/src/physical_optimizer/pipeline_checker.rs
#	datafusion/core/src/physical_optimizer/replace_with_order_preserving_variants.rs
#	datafusion/core/src/physical_optimizer/sort_pushdown.rs
#	datafusion/expr/src/tree_node/expr.rs
#	datafusion/expr/src/tree_node/plan.rs
#	datafusion/optimizer/src/analyzer/count_wildcard_rule.rs
#	datafusion/optimizer/src/analyzer/type_coercion.rs
#	datafusion/optimizer/src/push_down_filter.rs
#	datafusion/physical-expr/src/equivalence.rs
#	datafusion/physical-expr/src/sort_properties.rs
#	datafusion/physical-expr/src/utils/mod.rs