Max media attachment count

Signed-off-by: marcin mikołajczak <git@mkljczk.pl>

config/config.exs

@@ -259,7 +259,8 @@ config :pleroma, :instance,
   privileged_staff: false,
   max_endorsed_users: 20,
   birthday_required: false,
-  birthday_min_age: 0
+  birthday_min_age: 0,
+  max_media_attachments: 1_000
 
 config :pleroma, :welcome,
   direct_message: [

config/description.exs

@@ -552,6 +552,14 @@ config :pleroma, :config_description, [
           100_000
         ]
       },
+      %{
+        key: :max_media_attachments,
+        type: :integer,
+        description: "Maximum number of post media attachments",
+        suggestions: [
+          1_000_000
+        ]
+      },
       %{
         key: :upload_limit,
         type: :integer,