Fix jsonb inserts in PG when postgres.js is used as driver

[Angelelz]

Closes #724. Closes #1511

• Added an optional way to bypass the decoder when building the insert query. This is used only by the PgDialect when instantiated within the PostgresJsDatabase class.

This allows letting PostgresJs stringify the json object and write it properly to the database.

[AndriiSherman]

Related to #1560

[Angelelz]

I'm going to close this PR and open another one in which I will follow the same approach to bypassing the parsing made by postgres.js as the approach I used in #1659.
At the time I wrote this PR I didn't know how to bypass the parsing done by postgres.js. I believe that will be a lot simpler approach than what I did here, which was basically bypassing drizzle-orm's own parsing.

[Hebilicious]

For the subscribers : #1785