[C++] Implement arrow::Table::GetSizeInBytes() that returns the sum of all Buffer sizes from the internal ArrayData objects

This function will return the sum of `Buffer::size()` as int64 for all the ArrayData objects spread across the Table columns

**Reporter**: [Percy Camilo Triveño Aucahuasi](https://issues.apache.org/jira/browse/ARROW-12888) / @aucahuasi
#### Subtasks:
- [X] [[C++] Create naive implementation of algorithm to estimate table/batch buffer size](https://github.com/apache/arrow/issues/29924)
- [X] [[C++] Create kernel to determine buffer memory "referenced" by arrays (even if there are offsets)](https://github.com/apache/arrow/issues/29925)
- [ ] [[C++] Improve array size estimation to account for shared buffers](https://github.com/apache/arrow/issues/29926)

_{**Note**: *This issue was originally created as [ARROW-12888](https://issues.apache.org/jira/browse/ARROW-12888). Please see the [migration documentation](https://github.com/apache/arrow/issues/14542) for further details.*}

No source file or test is named. Start by reviewing the existing Table, ArrayData, and Buffer APIs and the completed subtasks linked in this issue; done means returning an int64 sum of Buffer::size() values across the table while accounting for shared buffers.

Written by the indexing model from the issue text.