Don't send --format option for codeql pack add command

By default, this is added when we call `runJsonCodeQlCliCommandWithAuthentication`.

However, `codeql pack add` doesn't support this option so we need to turn it off.

Co-authored-by: Shati Patel <shati-patel@github.com>

extensions/ql-vscode/src/cli.ts

@@ -1227,10 +1227,12 @@ export class CodeQLCliServer implements Disposable {
   async packAdd(dir: string, queryLanguage: QueryLanguage) {
     const args = ["--dir", dir];
     args.push(`codeql/${queryLanguage}-all`);
+    const addFormat = false;
     return this.runJsonCodeQlCliCommandWithAuthentication(
       ["pack", "add"],
       args,
       `Adding and installing ${queryLanguage} pack dependency.`,
+      addFormat,
     );
   }