Fetch authlib-injector metadata on startup

HMCL/src/main/java/org/jackhuang/hmcl/setting/Accounts.java

@@ -38,6 +38,7 @@ import org.jackhuang.hmcl.auth.yggdrasil.YggdrasilAccount;
 import org.jackhuang.hmcl.auth.yggdrasil.YggdrasilAccountFactory;
 import org.jackhuang.hmcl.task.Schedulers;
 
+import java.io.IOException;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Optional;
@@ -204,6 +205,18 @@ public final class Accounts {
                 }
             });
         }
+
+        for (AuthlibInjectorServer server : config().getAuthlibInjectorServers()) {
+            if (selected instanceof AuthlibInjectorAccount && ((AuthlibInjectorAccount) selected).getServer() == server)
+                continue;
+            Schedulers.io().schedule(() -> {
+                try {
+                    server.fetchMetadataResponse();
+                } catch (IOException e) {
+                    LOG.log(Level.WARNING, "Failed to fetch authlib-injector server metdata: " + server, e);
+                }
+            });
+        }
     }
 
     public static ObservableList<Account> getAccounts() {

HMCLCore/src/main/java/org/jackhuang/hmcl/auth/authlibinjector/AuthlibInjectorServer.java

@@ -218,6 +218,11 @@ public class AuthlibInjectorServer implements Observable {
         return this.url.equals(another.url);
     }
 
+    @Override
+    public String toString() {
+        return name == null ? url : url + " (" + name + ")";
+    }
+
     @Override
     public void addListener(InvalidationListener listener) {
         helper.addListener(listener);