Allow disabling Chats feature

Signed-off-by: nicole mikołajczyk <git@mkljczk.pl>

config/config.exs

@@ -979,6 +979,8 @@ config :pleroma, :database_config_whitelist, [
   {:web_push_encryption, :vapid_details}
 ]
 
+config :pleroma, Pleroma.Chat, enabled: true
+
 # Import environment specific config. This must remain at the bottom
 # of this file so it overrides the configuration defined above.
 import_config "#{Mix.env()}.exs"

config/description.exs

@@ -2726,6 +2726,19 @@ config :pleroma, :config_description, [
       }
     ]
   },
+  %{
+    group: :pleroma,
+    key: Pleroma.Chat,
+    type: :group,
+    description: "Pleroma Chat settings",
+    children: [
+      %{
+        key: :enabled,
+        type: :boolean,
+        description: "Enables the backend chats API."
+      }
+    ]
+  },
   %{
     group: :pleroma,
     key: :http,