Extract deprecated IntegrationTest configuration into sbt subproject

build.sbt

@@ -9,17 +9,15 @@ lazy val itkit =
       name         := "itkit",
       organization := "io.moia",
       licenses += ("Apache-2.0", url("http://www.apache.org/licenses/LICENSE-2.0")),
-      scmInfo  := Some(ScmInfo(url("https://github.com/moia-oss/itkit"), "scm:[email protected]:moia-oss/itkit.git")),
-      homepage := Some(url("https://github.com/moia-oss/itkit"))
+      scmInfo      := Some(ScmInfo(url("https://github.com/moia-oss/itkit"), "scm:[email protected]:moia-oss/itkit.git")),
+      homepage     := Some(url("https://github.com/moia-oss/itkit"))
     )
     .enablePlugins(
       AutomateHeaderPlugin,
       GitVersioning,
       GitBranchPrompt
     )
     .settings(sonatypeSettings: _*)
-    .configs(IntegrationTest)
-    .settings(Defaults.itSettings: _*)
     .settings(commonSettings)
     .settings(
       libraryDependencies ++= Seq(
@@ -43,15 +41,24 @@ lazy val itkit =
 lazy val samples =
   project
     .in(file("samples"))
-    .configs(IntegrationTest)
+    .configs(IntegrationWithTest)
     .dependsOn(itkit)
-    .settings(Defaults.itSettings: _*)
     .settings(commonSettings)
     .settings(
       fork            := true,
       publishArtifact := false
     )
 
+lazy val IntegrationWithTest     = config("it").extend(Test)
+lazy val integrationTestSettings = inConfig(IntegrationWithTest)(integrationTestConfig)
+lazy val integrationTestConfig   =
+  Defaults.configSettings ++ Defaults.testTasks ++ org.scalafmt.sbt.ScalafmtPlugin.scalafmtConfigSettings ++ Seq(
+    IntegrationWithTest / publish / skip    := true,
+    IntegrationWithTest / fork              := true,
+    IntegrationWithTest / scalaSource       := baseDirectory.value / "src" / "it" / "scala",
+    IntegrationWithTest / resourceDirectory := baseDirectory.value / "src" / "it" / "resources"
+  )
+
 // *****************************************************************************
 // Dependencies
 // *****************************************************************************
@@ -67,7 +74,7 @@ lazy val library =
       val scalaLogging = "3.9.5"
       val scalaTest    = "3.2.17"
     }
-    val akkaActor       = "com.typesafe.akka"          %% "akka-actor-typed"         % Version.akka
+    val akkaActor = "com.typesafe.akka" %% "akka-actor-typed" % Version.akka
     val akkaHttp        = "com.typesafe.akka"          %% "akka-http"                % Version.akkaHttp
     val akkaHttpTestkit = "com.typesafe.akka"          %% "akka-http-testkit"        % Version.akkaHttp
     val akkaStream      = "com.typesafe.akka"          %% "akka-stream-typed"        % Version.akka
@@ -123,15 +130,15 @@ lazy val compilerSettings =
       "-target",
       "1.8"
     ),
-    Compile / unmanagedSourceDirectories := Seq((Compile / scalaSource).value),
-    Test / unmanagedSourceDirectories    := Seq((Test / scalaSource).value)
+    Compile / unmanagedSourceDirectories                               := Seq((Compile / scalaSource).value),
+    Test / unmanagedSourceDirectories                                  := Seq((Test / scalaSource).value)
   )
 
 lazy val gitSettings = Seq(git.useGitDescribe := true)
 
 lazy val licenseSettings =
   Seq(
-    headerLicense := Some(
+    headerLicense  := Some(
       HeaderLicense.Custom(
         """|Copyright (c) MOIA GmbH 2017
            |""".stripMargin
@@ -160,9 +167,9 @@ lazy val scapegoatSettings = Seq(ThisBuild / scapegoatVersion := "2.1.3")
 lazy val sbtVersionRegex = "v([0-9]+.[0-9]+.[0-9]+)-?(.*)?".r
 
 lazy val sbtGitSettings = Seq(
-  git.useGitDescribe       := true,
-  git.baseVersion          := "0.0.0",
-  git.uncommittedSignifier := None,
+  git.useGitDescribe        := true,
+  git.baseVersion           := "0.0.0",
+  git.uncommittedSignifier  := None,
   git.gitTagToVersionNumber := {
     case sbtVersionRegex(v, "")         => Some(v)
     case sbtVersionRegex(v, "SNAPSHOT") => Some(s"$v-SNAPSHOT")