Move over to execute from to_canonical

[gatesn]

• Replace compute::filter with FilterArray
• Replace compute::take with DictArray
• Replace compute::mask with MaskArray
• Add into_parts functions to avoid .clone().execute()
• Add SliceArray and remove offset held by other arrays,
  • Either you can push down a slice if not buffers must be check to push down array reduce_parent otherwise implement execute_parent
• Move over layouts to using execute::()
  • Dict layout: have CachedArray

Invert Function

• Move canonical implementation into exprs/invert.rs
• Implement invoke preamble as reduce rule
• Port existing cast kernels over to ReduceParent or ExecuteParent rules.

Cast Function

• Move canonical implementation into exprs/cast/...
• Implement invoke preamble as reduce rule
• Port existing cast kernels over to ReduceParent or ExecuteParent rules.

Compare Function

• (punt) Split Binary expression into Compare, Arithmetic, and Logical
• Migrate kernels over to reduce parent.