missing gorm from sample code

the following line from https://github.com/qor/auth?tab=readme-ov-file#quick-start

```
  gormDB, _ = gorm.Open("sqlite3", "sample.db")
```

causing the below error:

```
❯ go build main.go                         
# command-line-arguments
./main.go:20:15: undefined: gorm
```

Looks like the module `gorm` is not included in the sample code 🤔  