Switch atmosphere's build target to C++20. (#952)

* ams: update to build with gcc10/c++20

* remove mno-outline-atomics

* ams: take care of most TODO C++20s

* fusee/sept: update for gcc10

* whoosh, your code now uses pre-compiled headers

* make: dependency fixes

libraries/libstratosphere/source/ncm/ncm_content_meta_database_impl.cpp

@@ -451,7 +451,7 @@ namespace ams::ncm {
 
         /* Ensure this type of key has an owner. */
         R_UNLESS(key.type == ContentMetaType::Application || key.type == ContentMetaType::Patch || key.type == ContentMetaType::AddOnContent, ncm::ResultInvalidContentMetaKey());
-    
+
         /* Applications are their own owner. */
         if (key.type == ContentMetaType::Application) {
             out_id.SetValue({key.id});