New option to use and configure Prosody mod_firewall WIP (#97):

* new setting
* new configuration screen for Peertube admins
* include the mod_firewall module
* load mod_firewall if enabled
* sys admin can disable the firewall config editing by creating a
  special file on the disk
* user documentation

client/common/admin/firewall/register.ts

@@ -0,0 +1,26 @@
+// SPDX-FileCopyrightText: 2024 John Livingston <https://www.john-livingston.fr/>
+//
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import type { RegisterClientOptions } from '@peertube/peertube-types/client'
+import { html, render } from 'lit'
+import './elements' // Import all needed elements.
+
+/**
+ * Registers stuff related to mod_firewall configuration.
+ * @param clientOptions Peertube client options
+ */
+async function registerAdminFirewall (clientOptions: RegisterClientOptions): Promise<void> {
+  const { registerClientRoute } = clientOptions
+
+  registerClientRoute({
+    route: 'livechat/admin/firewall',
+    onMount: async ({ rootEl }) => {
+      render(html`<livechat-admin-firewall .registerClientOptions=${clientOptions}></livechat-admin-firewall>`, rootEl)
+    }
+  })
+}
+
+export {
+  registerAdminFirewall
+}