Support Multiple row layout #2188
Description
- Move layout, null bits, and jit code to their separate module. Restructure code for clearness. Multiple row-layout support, part-1: Restructure code for clearness #2189
- Support 8-byte aligned layout for hash-buffer Introduce RowLayout to represent rows for different purposes #2261
- Move row to its crate to enable usage from AggregateExpr. Make row its crate to make it accessible from physical-expr #2283
[ ] Research on inline varlena fields for raw-bytes-based comparison.move to track in [Epic]: Complete ROW Format (Missing features) #1861