Add a Linux arm64 case for coursier download

Author: Gedochao

project/settings.sc

@@ -59,6 +59,7 @@ def fromPath(name: String): String =
 def cs: T[String] = T.persistent {
 
   val arch      = sys.props.getOrElse("os.arch", "").toLowerCase(Locale.ROOT)
+  println(s"arch: $arch")
   val ext       = if (Properties.isWin) ".exe" else ""
   val csVersion = if (arch == "aarch64" && Properties.isMac) buildCsM1Version else buildCsVersion
   val dest      = T.dest / s"cs-$csVersion$ext"
@@ -79,6 +80,12 @@ def cs: T[String] = T.persistent {
             s"https://github.com/coursier/coursier/releases/download/v$csVersion/cs-x86_64-pc-linux.gz"
           )
         else None
+      case "arm64" =>
+        if (Properties.isLinux)
+          Some(
+            s"https://github.com/VirtusLab/coursier-m1/releases/download/v$csVersion/cs-aarch64-pc-linux.gz"
+          )
+        else None
       case "aarch64" =>
         if (Properties.isLinux)
           Some(