[EPIC] Improvements to GroupColumn multi-column aggregation performance

[alamb]

Is your feature request related to a problem or challenge?

In #12269 @jayzhan211 made significant improvements to how group values are stored in multi-column aggregations. There are a few follow ups to this work that I wanted to track here

Describe the solution you'd like

• Minor: Encapsulate type check in GroupValuesColumn, avoid panic #12620
• Rename aggregation modules, GroupColumn #12619
• docs: improve the documentation for Aggregate code #12617
• Refactor PrimitiveGroupValueBuilder to use MaybeNullBufferBuilder #12623
• Reduce code duplication in PrimitiveGroupValueBuilder with const generics #12703
• Refactor ByteGroupValueBuilder to use MaybeNullBufferBuilder #12681
• fix equal_to in PrimitiveGroupValueBuilder #12758
• Fix equal_to in ByteGroupValueBuilder #12770
• potentially and optimize the take_n for the boolean builder using arrow-rs (would help streaming aggregates)
• Implement special Groups for StringViews #12771
• Implement GroupColumn for other primitive based types (e.g. DecimalArray)
• Support vectorized append and compare for multi group by #12996
• Reorganize the GroupColumn implementations into more coherent modules #13262
• Implement Specialized GroupColumn for Date/Time/Timestamp types for multi-column GROUP BY #13263

Describe alternatives you've considered

No response

Additional context

No response

[alamb]

@Rachelint has a special vectorized comparison PR here as well: #12996