Trino Visual Query Builder

The Trino part of this application should get a second tab in which the user can create a query visually instead of needing to type in the correct syntax into the query editor. The design follows the pattern of SvelteFlow with a likeness of ER-diagrams but because there are no foreign keys in Trino, we can't actually display connections automatically between tables.

• The user should be able to add nodes which are connected by edges going from specific columns into a node (e.g. WHERE, ORDER BY, JOIN etc.).
• The user should be able to save and load queries.
• The user should see the actual query being built in real time.
• For easier access, a simplified inline notation is used to quickly add clauses right under a column via right click.
• Because of the complexity, only one query is allowed to be assembled at a time. This allows us to avoid adding a SELECT node by moving the selected columns to checkboxes near the individual columns.