Support of Scanner and Valuer Interfaces in database/sql

[junsazanami430u]

If we could receive bigint as SonyflakeID types from the RDB, we could easily use them with ORM.
To receive SonyflakeID types from the RDB, we need to implement the sql.Scanner interface and the driver.Vuler interface.

• Scanner Interface
  https://pkg.go.dev/database/sql#Scanner

• Valuer Interface
  https://pkg.go.dev/database/sql/driver#Valuer

• uuid Scan
  https://github.com/google/uuid/blob/v1.6.0/sql.go#L15-L52

• ulid Scan
  https://github.com/oklog/ulid/blob/main/ulid.go#L499-L547

[YoshiyukiMineo]

One of the benefits of Sonyfake is that a Sonyflake ID is just a int64. So you can easily handle Sonyflake IDs as BIGINT in RDB.