[IMP] mail: add empty message (@ and #)

closes odoo/odoo#74933

Task-id: 2622240
Signed-off-by: Lucas Perais (lpe) <lpe@odoo.com>

addons/mail/static/src/webclient/commands/command_category.js

@@ -4,4 +4,4 @@ import { registry } from "@web/core/registry";
 import { _lt } from "@web/core/l10n/translation";
 
 const commandCategoryRegistry = registry.category("command_categories");
-commandCategoryRegistry.add("mail", { label: _lt("Discuss") }, { sequence: 20 });
+commandCategoryRegistry.add("mail", {}, { sequence: 20 });

addons/mail/static/src/webclient/commands/mail_providers.js

@@ -1,5 +1,6 @@
 /** @odoo-module */
 
+import { _lt } from "@web/core/l10n/translation";
 import { registry } from "@web/core/registry";
 
 const { Component } = owl;
@@ -13,10 +14,13 @@ DialogCommand.template = xml`
     </div>
 `;
 
-const commandProviderRegistry = registry.category("command_provider");
+const commandEmptyMessageRegistry = registry.category("command_empty_list");
+commandEmptyMessageRegistry.add("@", _lt("No user found"));
+commandEmptyMessageRegistry.add("#", _lt("No channel found"));
 
+const commandProviderRegistry = registry.category("command_provider");
 commandProviderRegistry.add("partner", {
-    nameSpace: "@",
+    namespace: "@",
     async provide(newEnv, options) {
         const messaging = await Component.env.services.messaging.get();
         const suggestions = [];
@@ -43,7 +47,7 @@ commandProviderRegistry.add("partner", {
 });
 
 commandProviderRegistry.add("channel", {
-    nameSpace: "#",
+    namespace: "#",
     async provide(newEnv, options) {
         const messaging = await Component.env.services.messaging.get();
         const channels = await messaging.models['mail.thread'].searchChannelsToOpen({