[SPARK-13957][SQL] Support Group By Ordinal in SQL

#### What changes were proposed in this pull request?
This PR is to support group by position in SQL. For example, when users input the following query
```SQL
select c1 as a, c2, c3, sum(*) from tbl group by 1, 3, c4
```
The ordinals are recognized as the positions in the select list. Thus, `Analyzer` converts it to
```SQL
select c1, c2, c3, sum(*) from tbl group by c1, c3, c4
```

This is controlled by the config option `spark.sql.groupByOrdinal`.
- When true, the ordinal numbers in group by clauses are treated as the position in the select list.
- When false, the ordinal numbers are ignored.
- Only convert integer literals (not foldable expressions). If found foldable expressions, ignore them.
- When the positions specified in the group by clauses correspond to the aggregate functions in select list, output an exception message.
- star is not allowed to use in the select list when users specify ordinals in group by

Note: This PR is taken from https://github.com/apache/spark/pull/10731. When merging this PR, please give the credit to zhichao-li

Also cc all the people who are involved in the previous discussion:  rxin cloud-fan marmbrus yhuai hvanhovell adrian-wang chenghao-intel tejasapatil

#### How was this patch tested?

Added a few test cases for both positive and negative test cases.

Author: gatorsmile <gatorsmile@gmail.com>
Author: xiaoli <lixiao1983@gmail.com>
Author: Xiao Li <xiaoli@Xiaos-MacBook-Pro.local>

Closes #11846 from gatorsmile/groupByOrdinal.