Replace github.com/gofrs/uuid with github.com/google/uuid

In https://github.com/gnormal/postgres-go/blob/master/gnorm_templates/table.gotmpl and https://github.com/gnormal/postgres-go/blob/master/gnorm_templates/fields.gotmpl could we replace
```
	uuid "github.com/gofrs/uuid"
```
with
```
	uuid "github.com/google/uuid"
```

Dhanyavaad.