feat(navbarCleanup): database selector and settings available

apps/web/src/app/panels/Visualization.tsx

...components/navbar/DatabaseManagement/DatabaseSelector.tsx

...bar/DatabaseManagement/forms/AddDatabase/mockDatabases.ts

...vbar/DatabaseManagement/forms/AddDatabase/newdatabase.tsx

...c/components/navbar/DatabaseManagement/forms/settings.tsx

apps/web/src/components/navbar/databasemenu.tsx

apps/web/src/components/navbar/navbar.tsx

apps/web/src/components/navbar/search/SearchBar.tsx

apps/web/src/components/onboarding/onboarding.tsx

libs/shared/lib/components/LoadingSpinner.tsx

libs/shared/lib/components/forms/requiredinput.tsx

libs/shared/lib/data-access/api/database.ts

libs/shared/lib/data-access/store/sessionSlice.ts

libs/shared/lib/schema/panel/schema.tsx