If the database changes, schema and qb are cleared

properly connect to recently added database

also added query result status as a text in visualization

Inner query in JSON format fully reworked. The interface was reworked to use entity attributes as part of query logic. Handle inner logic and types fully reworked for better type-checking and future-proofing. Includes logic in query building, parsing, and execution.
Logic pills can be created from the handle drop and from the side panel.

Solves #42 and #53

Added a main webpage to web/app with a navbar to control login/logout and add/select/remove a database to be queried. Restructured the main dashboard to use tailwindcss. Ported the websockets and broker implementation to V1 and tied all components (schema, querybuilder, and visualizer) together.

Solves #21

Ported querybuilder pills, edges and interactions from V1 and added stories for each pill. Ported drag-and-drop functionality between schema panel and querybuilder (plus story). Also ported Navbar for the dashboard.

Solves #20, #19, #25