Move coursier utils to the core module

Author: Gedochao

modules/cli/src/main/scala/scala/cli/commands/fmt/FmtOptions.scala

@@ -4,6 +4,7 @@ import caseapp.*
 import coursier.core.Version
 
 import scala.build.EitherCps.{either, value}
+import scala.build.coursierVersion
 import scala.build.errors.BuildException
 import scala.build.internal.FetchExternalBinary
 import scala.build.options.BuildOptions
@@ -16,7 +17,6 @@ import scala.cli.commands.shared.{
   SharedOptions
 }
 import scala.cli.commands.{Constants, tags}
-import scala.cli.coursierVersion
 import scala.util.Properties
 
 // format: off

modules/cli/src/main/scala/scala/cli/commands/repl/Repl.scala

@@ -37,7 +37,7 @@ import scala.cli.config.{ConfigDb, Keys}
 import scala.cli.packaging.Library
 import scala.cli.util.ArgHelpers.*
 import scala.cli.util.ConfigDbUtils
-import scala.cli.{CurrentParams, ScalaCli, coursierVersion}
+import scala.cli.{CurrentParams, ScalaCli}
 import scala.jdk.CollectionConverters.*
 import scala.util.Properties
 

modules/cli/src/main/scala/scala/cli/package.scala

@@ -0,0 +1,5 @@
+package scala.build
+
+import coursier.core.Version
+
+extension (s: String) def coursierVersion: Version = Version(s)