outbound: ECH Config List

web/html/form/outbound.html

@@ -441,6 +441,9 @@
               <a-select-option v-for="alpn in ALPN_OPTION" :value="alpn">[[ alpn ]]</a-select-option>
             </a-select>
           </a-form-item>
+          <a-form-item label="ECH Config List">
+            <a-input v-model.trim="outbound.stream.tls.echConfigList"></a-input>
+          </a-form-item>
           <a-form-item label="Allow Insecure">
             <a-switch v-model="outbound.stream.tls.allowInsecure"></a-switch>
           </a-form-item>