Enable support for derives in Scala 3 for Read, Write and Text

[oyvindberg]

In order for this keyword to work, there needs to be a derived method available in the companion objects. This gives some of the givens the expected name.

This is what it looks like without this patch:

[error] -- [E008] Not Found Error: /home/.../doobie/modules/core/src/test/scala-3/doobie/util/ReadSuitePlatform.scala:25:51 
[error] 25 |    case class Foo(a: String, b: Int) derives util.Read
[error]    |                                                   ^
[error]    |value derived is not a member of object doobie.util.Read, but could be made available as an extension method.
[error]    |
[error]    |The following import might make progress towards fixing the problem:
[error]    |
[error]    |  import munit.Clue.generate
[error]    |
[error] one error found

[jatcwang]

Thanks @oyvindberg!