feat(ui): add relationship management features in schema editor

- Implement functionality to create, update, delete, and view relationships between tables.
- Introduce new UI screens for managing relationships, including forms for adding and editing relationships.
- Enhance table editor with navigation to relationship management.
- Ensure relationships are displayed in a structured table format for better usability.

pkg/readers/sqlite/queries.go

@@ -106,7 +106,7 @@ func (r *Reader) queryColumns(tableName string) (map[string]*models.Column, erro
 		}
 
 		// Check for autoincrement (SQLite uses INTEGER PRIMARY KEY AUTOINCREMENT)
-		if pk > 0 && strings.ToUpper(dataType) == "INTEGER" {
+		if pk > 0 && strings.EqualFold(dataType, "INTEGER") {
 			column.AutoIncrement = r.isAutoIncrement(tableName, name)
 		}