Add a Scala 3 native build

Author: JD557

build.sbt

@@ -32,6 +32,7 @@ lazy val root = project
     compat213Native,
     compat30JVM,
     compat30JS,
+    compat31Native,
     scalafixData211,
     scalafixData212,
     scalafixData213,
@@ -53,6 +54,7 @@ lazy val scala211 = "2.11.12"
 lazy val scala212 = "2.12.15"
 lazy val scala213 = "2.13.8"
 lazy val scala30  = "3.0.2"
+lazy val scala31  = "3.1.1"
 
 lazy val compat = new MultiScalaCrossProject(
   "compat",
@@ -125,6 +127,7 @@ val compat211 = compat(Seq(JSPlatform, JVMPlatform, NativePlatform), scala211)
 val compat212 = compat(Seq(JSPlatform, JVMPlatform, NativePlatform), scala212)
 val compat213 = compat(Seq(JSPlatform, JVMPlatform, NativePlatform), scala213)
 val compat30  = compat(Seq(JSPlatform, JVMPlatform), scala30)
+val compat31  = compat(Seq(JVMPlatform, NativePlatform), scala31)
 
 lazy val compat211JVM    = compat211.jvm
 lazy val compat211JS     = compat211.js
@@ -137,6 +140,7 @@ lazy val compat213JS     = compat213.js
 lazy val compat213Native = compat213.native
 lazy val compat30JVM     = compat30.jvm
 lazy val compat30JS      = compat30.js
+lazy val compat31Native  = compat31.native
 
 lazy val binaryCompatOld = project
   .in(file("binary-compat/old"))

project/plugins.sbt

@@ -1,6 +1,6 @@
 addSbtPlugin("org.scala-js"           % "sbt-scalajs"                   % "1.8.0")
 addSbtPlugin("org.portable-scala"     % "sbt-scalajs-crossproject"      % "1.1.0")
-addSbtPlugin("org.scala-native"       % "sbt-scala-native"              % "0.4.3")
+addSbtPlugin("org.scala-native"       % "sbt-scala-native"              % "0.4.4")
 addSbtPlugin("org.portable-scala"     % "sbt-scala-native-crossproject" % "1.1.0")
 addSbtPlugin("org.scala-lang.modules" % "sbt-scala-module"              % "3.0.1")
 addSbtPlugin("ch.epfl.scala"          % "sbt-scalafix"                  % "0.9.34")