Adds roc-lang vscode extension

programs/vscode.nix

@@ -104,6 +104,8 @@ in {
         plugin.tactics.config.timeout_duration = 5;
       };
 
+      roc-lang.language-server.exe = "/nix/store/1m7xfjx1b79s39cxl52aq77z22yffs4a-roc-0.0.1/bin/roc_language_server";
+
       nix = {
         formatterPath = "${pkgs.nixfmt}/bin/nixfmt";
       };

programs/vscode/extensions.nix

@@ -71,6 +71,12 @@
     version = "2.5.2";
     sha256 = "09pr3ya77ryj5n80k5srwaxmr0j77f6xp67w0kz324i6fhjd12bq";
   }
+  {
+    name = "roc-lang-unofficial";
+    publisher = "ivandemchenko";
+    version = "1.2.0";
+    sha256 = "0q9w0sv4988wh4p4vmf45jab614ggkd7qfjphdnlmnqcald7mhwl";
+  }
   {
     name = "gruvbox";
     publisher = "jdinhlife";