[Bug] Import error when run main.py

When debuging main.py script, the error occur

```
from mindsdb_sql.parser import SQLParser
cannot import name 'SQLParser' from 'mindsdb_sql.parser'
```

It should be 
```
from mindsdb_sql.parser.parser import SQLParser
```

![image](https://github.com/user-attachments/assets/ccbd729c-3e9c-45dd-953c-1d8209ed03ba)