v0.2.0

• dbt integration: sql/jinja-sql files inside a dbt project that contain the VISUALISE/VISUALIZE
  keyword get a "Render ggsql Visualization" run button.
  The SQL part is compiled and executed by the dbt CLI using dbt show
  and the VISUALISE part is rendered by ggsql reading that file through its duckdb reader.
• New setting: ggsql.dbtPath (path to the dbt executable, defaults to
  dbt on PATH).