types: support type aliases

[tburgin]

Given a table like:

CREATE TABLE TestTable (Key INT64, IP BYTES(MAX), Duration INT64) PRIMARY KEY (Key)

I propose supporting writing and scanning from/to type aliases.

_, err = tx.ExecContext(ctx,
	"INSERT INTO TestTable (key, ip, duration) VALUES (@key, @ip, @duration)",
	123, net.IPv6loopback, time.Duration(1))

When using a struct as a model in an ORM (gorm for example), supporting type aliases makes those abstractions much more ergonomic.

[olavloite]

This looks good to me.

@egonelbre Would you mind taking a look as well? As far as I can see, this retains the behavior that you introduced with the current implementation, and should as such not break anything on your side, but it would be good if you could confirm.

[egonelbre]

@olavloite looks like all our tests passed. But valuerReflectType and callValuerValue can now also be removed.

[olavloite]

@olavloite looks like all our tests passed. But valuerReflectType and callValuerValue can now also be removed.

Thanks for the quick response! I'll indeed remove the (now) unused methods before merging.

[tburgin]

Thanks for the quick review.