[SPARK-14085][SQL] Star Expansion for Hash

#### What changes were proposed in this pull request?

This PR is to support star expansion in hash. For example,
```SQL
val structDf = testData2.select("a", "b").as("record")
structDf.select(hash($"*")
```

In addition, it refactors the codes for the rule `ResolveStar` and fixes a regression for star expansion in group by when using SQL API. For example,
```SQL
SELECT * FROM testData2 group by a, b
```

cc cloud-fan Now, the code for star resolution is much cleaner. The coverage is better. Could you check if this refactoring is good? Thanks!

#### How was this patch tested?
Added a few test cases to cover it.

Author: gatorsmile <gatorsmile@gmail.com>

Closes #11904 from gatorsmile/starResolution.