[feature] separate subscription service

Co-Authored-By: Alireza Ahmadi <alireza7@gmail.com>

web/html/xui/form/protocol/trojan.html

@@ -18,7 +18,7 @@
                 <a-icon @click="client.password = RandomUtil.randomSeq(10)" type="sync"> </a-icon>
                 <a-input v-model.trim="client.password" style="width: 150px;"></a-input>
             </a-form-item>
-            <a-form-item v-if="client.email">
+            <a-form-item v-if="client.email && app.subSettings.enable">
                 <span slot="label">
                     Subscription
                     <a-tooltip>
@@ -31,7 +31,7 @@
                 <a-icon @click="client.subId = RandomUtil.randomText()" type="sync"> </a-icon>
                 <a-input v-model.trim="client.subId" style="width: 150px;"></a-input>
             </a-form-item>
-            <a-form-item v-if="client.email">
+            <a-form-item v-if="client.email && app.tgBotEnable">
                 <span slot="label">
                     Telegram ID
                     <a-tooltip>