[Feature][Zeta] Support Basic Authentication for web ui

Author: CosmosNi

Diff for: config/seatunnel.yaml

@@ -44,6 +44,7 @@ seatunnel:
       enable-http: true
       port: 8080
       enable-dynamic-port: false
-      enable-basic-auth: true
-      basic-auth-username: admin
-      basic-auth-password: admin
+      # Uncomment the following lines to enable basic authentication for web UI
+      # enable-basic-auth: true
+      # basic-auth-username: admin
+      # basic-auth-password: admin