Add scalafmt newlines.topLevelStatementBlankLines setting (#8949)

.scalafmt.conf

@@ -37,3 +37,11 @@ fileOverride {
     runner.dialectOverride.allowAsForImportRename = false
   }
 }
+
+newlines.topLevelStatementBlankLines = [
+  {
+    blanks { after = 1 }
+    maxNest = 0
+    regex = "Import"
+  }
+]

lm-core/src/main/scala/sbt/internal/librarymanagement/SemSelOperator.scala

@@ -1,4 +1,5 @@
 package sbt.internal.librarymanagement
+
 sealed abstract class SemSelOperator {
   override def toString: String = this match {
     case SemSelOperator.Lte => "<="

lm-coursier/definitions/src/main/scala/lmcoursier/definitions/Module.scala

@@ -1,4 +1,5 @@
 package lmcoursier.definitions
+
 import dataclass.data
 
 @data class Module(

main/src/main/scala/sbt/ExecuteProgress2.scala

@@ -7,6 +7,7 @@
  */
 
 package sbt
+
 import sbt.internal.util.RMap
 
 /**

main/src/main/scala/sbt/internal/CommandExchange.scala

@@ -9,6 +9,7 @@
 package sbt
 
 package internal
+
 import java.io.{ File, IOException }
 import java.net.Socket
 import java.util.concurrent.atomic.*

protocol/src/main/scala/sbt/internal/protocol/codec/JsonRPCProtocol.scala

@@ -7,6 +7,7 @@
  */
 
 package sbt.internal.protocol.codec
+
 trait JsonRPCProtocol
     extends sbt.internal.util.codec.JValueFormats
     with sjsonnew.BasicJsonProtocol

util-collection/src/main/scala/sbt/internal/util/Par.scala

@@ -6,6 +6,7 @@
  */
 
 package sbt.internal.util
+
 import scala.collection.parallel.CollectionConverters.*
 import scala.collection.parallel.ParSeq