introduce ForUpdateOption to be able to customize use particular for …

[lure]

…update form. There is a significant difference between different for update semantics and it is desirable to support them. PG: https://www.postgresql.org/docs/12/explicit-locking.html#LOCKING-ROWS Mysql: https://dev.mysql.com/doc/refman/8.0/en/innodb-locking-reads.html

All the honor goes to Gleb Leonov and Space team.

[lure]

@Tapac :)