sqlx options

The sqlx derives take a #[sqlx_model(...)] attribute:

Key	Description
database	Required. "sqlite", "postgres" or "mysql"
model	Required on SqlxNewModel. The model returned by save
table	The table, the lowercase model name by default
pool	The field of AppState holding the pool, pool by default
timestamps	Fill created_at and updated_at automatically
soft_delete	delete sets deleted_at instead of removing the row, which is then hidden
default_limit, max_limit	The page size of list
filter	list applies the filters and sort of its query, see SqlxFilter
before_save	Transform the payload before writing it, see Transforming the payload