vscode-language-packs: add update script

pkgs/applications/editors/vscode/extensions/language-packs.nix

@@ -1,4 +1,10 @@
-{ lib, vscode-utils }:
+{
+  lib,
+  vscode-utils,
+  writeShellScript,
+  nix-update,
+  vscode-extensions-update,
+}:
 
 with vscode-utils;
 
@@ -16,6 +22,14 @@ let
         publisher = "MS-CEINTL";
         inherit version sha256;
       };
+      passthru.updateScript = lib.optionalAttrs (language == "fr") (
+        writeShellScript "vscode-language-packs-update-script" ''
+          ${lib.getExe vscode-extensions-update} vscode-extensions.ms-ceintl.vscode-language-pack-fr --override-filename "pkgs/applications/editors/vscode/extensions/language-packs.nix"
+          for lang in cs de es it ja ko pt-br qps-ploc ru tr zh-hans zh-hant; do
+            ${lib.getExe nix-update} --version "skip" "vscode-extensions.ms-ceintl.vscode-language-pack-$lang" --override-filename "pkgs/applications/editors/vscode/extensions/language-packs.nix"
+          done
+        ''
+      );
       meta = {
         license = lib.licenses.mit;
       };