Implement AnyRee

[Rich-T-kid]

Which issue does this PR close?

closes #9909.

• Closes AnyRunArray trait #9909.

Rationale for this change

makes the API simpler to work with & less code duplication

What changes are included in this PR?

Replace the per-key-type RunEndEncoded match arms in length/bit_length (arrow-string) and date_part (arrow-arith) with a single dispatch through the new AsArray::as_any_ree_opt/as_any_ree returning &dyn AnyRunEndArray, mirroring the existing dictionary handling. This removes the
now-unused ree_map! macro, leaving one trait-object code path for all Int16/Int32/Int64 run-end types.

Are these changes tested?

yes

Are there any user-facing changes?

no

[Jefffrey]

Oh I just realized we could have delegated to the existing with_values() 🤦

arrow-rs/arrow-array/src/array/run_array.rs

Lines 247 to 260 in 7abb225

	pub fn with_values(&self, values: ArrayRef) -> Self {
	assert_eq!(values.len(), self.values().len());
	let (run_ends_field, values_field) = match &self.data_type {
	DataType::RunEndEncoded(r, v) => (r, v),
	_ => unreachable!("RunArray should have type RunEndEncoded"),
	};
	let data_type =
	DataType::RunEndEncoded(Arc::clone(run_ends_field), Arc::clone(values_field));
	Self {
	data_type,
	run_ends: self.run_ends.clone(),
	values,
	}
	}

Though it looks like it also doesn't verify the incoming values has the correct datatype 😬

[Rich-T-kid]

hmmmm, I'll replace the current with_values() my implementation of with_values(). This way we dont duplicate existing methods and get datatype validation