Feature: Adding {DBI} & {dbplyr} backend for SQL

[zacdav-db]

Currently {brickster} has two ways to query a SQL warehouse:

1. databricks-sql-connector via {reticulate}
2. SQL execution API

A {DBI} and {dbplyr} backend could be created for each, this would enable querying SQL warehouses without ODBC driver installation.

I've done a small proof of concept and this works extremely well, few bits to iron out. Unsure if worth splitting to another package 🤔.

[zacdav-db]

• [ ] DBI backend (python sql connector)
• [ ] DBI backend (sql execution api)
• [ ] dbplyr backend
• [ ] _pkgdown.yml
• [ ] vignette
• [ ] README.md
• [ ] NEWS.md
• [ ] tests
  • [ ] SQL connector tests enhanced
  • [ ] DBI backend
  • [ ] dbplyr backend