add a major part of user level

app/public/guild/welcomeForm.js

@@ -0,0 +1,32 @@
+const welcomeForm = document.getElementById("welcome-form");
+const welcomeEnabled = document.getElementById("welcome-enabled");
+const welcomeChannel = document.getElementById("welcome-channel");
+const welcomeMessage = document.getElementById("welcome-message");
+const statusWelcomeForm = document.getElementById("status-welcome-form");
+
+fetch(`/api/bot/get-welcome-config/${guildId}`)
+  .then(res => res.json())
+  .then(cfg => {
+    welcomeEnabled.checked = cfg.enabled;
+    welcomeChannel.value = cfg.channelId;
+    welcomeMessage.value = cfg.message;
+  });
+
+welcomeForm.addEventListener("submit", async e => {
+  e.preventDefault();
+
+  const res = await fetch("/api/bot/save-welcome-config", {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify({
+      guildId,
+      welcomeEnabled: welcomeEnabled.checked,
+      channelId: welcomeChannel.value,
+      welcomeMessage: welcomeMessage.value
+    })
+  });
+
+  statusWelcomeForm.textContent = (await res.json()).success
+    ? "Config bienvenue sauvegardée ✅"
+    : "Erreur ❌";
+});