Add `YamlEncoder` for `Option`

[Kamil Podsiadło]

// using scala 3.1.0
// using lib org.virtuslab::scala-yaml:0.0.4

import org.virtuslab.yaml.*

case class Foo(field: Option[String]) derives YamlCodec

running via scala-cli run . yields compilation error

Compiling project (Scala 3.1.0, JVM)
[error] ./example2.sc:6:47: no implicit argument of type org.virtuslab.yaml.YamlEncoder[Option[String]] was found
[error] case class Foo(field: Option[String]) derives YamlCodec
[error]                                               ^
Error compiling project (Scala 3.1.0, JVM)

[Leonid Dubinsky]

Hi @kpodsiad! Do you think there is any hope for this bug to ever get fixed? Thanks!

[Łukasz Biały]

@dubinsky I'll take a look at all the PRs and issues this week.

[Leonid Dubinsky]

Thank you @lbialy!

[Kamil Podsiadło]

@lbialy thanks good sir