* QUAL: Add sqlfluff (SQL code and style check)
# QUAL: Add sqlfluff (SQL code and style check)
This adds a validity and style check on the .sql files.
The same tool can be used to fix style (which can be set up as a
pre-commit hook).
* Ignore some sqlfluff notices
* Ignore RF04 notice, warning about the use of sql keywords
* Adjust dialects for some directories
