Migrate from Scala native 0.4 to 0.5 (fixes #401)

[MateuszKubuszok]

I edited only these dependencies that had to be updated for Scala Native 0.5.

enumeratumPlayNative and enumeratumPlayJson does not compile (because one would have to enumeratumCore/publishLocal), but it should be close enough.

[kubukoz]

@MateuszKubuszok you need to update the scalajs version:

diff --git a/project/plugins.sbt b/project/plugins.sbt
index a481eab..c9268fe 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -7,7 +7,7 @@ addSbtPlugin("com.github.tkawachi" % "sbt-doctest"   % "0.10.0")
 addSbtPlugin("com.github.sbt"      % "sbt-pgp"       % "2.2.1")
 addSbtPlugin("com.eed3si9n"        % "sbt-buildinfo" % "0.11.0")
 
-addSbtPlugin("org.scala-js"       % "sbt-scalajs"              % "1.13.2")
+addSbtPlugin("org.scala-js"       % "sbt-scalajs"              % "1.16.0")
 addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.3.2")
 
 addSbtPlugin("org.scala-native"   % "sbt-scala-native"              % "0.5.4")

the dependency bumps (e.g. cats) must've brought in a more recent scalajs version, so you need to compile/link against one that's able to understand its IR

[kubukoz]

Superseded by #403, thanks for laying the groundwork (or should I say, doing 99% of the work) @MateuszKubuszok :)