don't generate sqls with aggregation of tuples

[fwbrasil]

Problem

Quill translations aggregations of tuples using invalid syntax. For instance COUNT(a.i, a.j).

Solution

Render COUNT(*) instead.

Checklist

• Unit test all changes
• Update README.md if applicable
• Add [WIP] to the pull request title if it's work in progress
• Squash commits that aren't meaningful changes
• Run sbt scalariformFormat test:scalariformFormat to make sure that the source files are formatted

@getquill/maintainers