Set base for settings, add volatile settings for theme and language

Goal is to have a common and reusable base for the settings. Having nice styles and saving preferences is out of scope for now.

Note the conversation page is now the "main page" instead of the account settings.

Change-Id: I328686047d924642ae6781096c9f57308e8fea22
diff --git a/client/src/router.tsx b/client/src/router.tsx
index aea571b..4b053aa 100644
--- a/client/src/router.tsx
+++ b/client/src/router.tsx
@@ -29,6 +29,7 @@
 import NotificationManager from './managers/NotificationManager';
 import AccountSettings from './pages/AccountSettings';
 import CallInterface from './pages/CallInterface';
+import GeneralSettings from './pages/GeneralSettings';
 import Messenger from './pages/Messenger';
 import Setup from './pages/Setup';
 import SetupLogin from './pages/SetupLogin';
@@ -85,7 +86,8 @@
             />
           </Route>
         </Route>
-        <Route path="settings" element={<AccountSettings />} />
+        <Route path="settings-account" element={<AccountSettings />} />
+        <Route path="settings-general" element={<GeneralSettings />} />
         <Route path="contacts" element={<ContactList />} />
       </Route>
     </Route>