empty() in this case will always return false, since the returned
container is a std::array. Instead, check if all given users are invalid
before returning the error code.

Needed for Shantae - Half-Genie Hero - Ultimate Edition!

This is just flat data, so it doesn't really need to be in the function
itself. This also allows deduplicating the constant for the backup size
in GetImageSize().

Silences compiler warnings related to truncation. This also introduces a
small helper function to perform the clamping of the image size.

Allows unindenting the other branch's code.

With these, `Nintendo Entertainment System - Nintendo Switch Online` loads

This is only used in a shared_ptr, so we can forward declare it.

We have an overload of WriteBuffer that accepts containers that satisfy
the ContiguousContainer concept, which std::array does, so we only need
to pass in the array itself.

Arranges them in the order the members would be initialized

This is no longer used, so it can be removed.

This commit verified working on puyo

- Used by Pokken Tournament DX.

Added ability to change username & language code in the settings ui. Added IProfile::Get and SET::GetLanguageCode for libnx tests (#851)

Avoids unwanted implicit conversions. Thankfully, given the large amount
of cleanup in past PRs, only this tiny amount is left over to cover.

And make IManagerForApplication::CheckAvailability always return false.
Returning a bogus id from GetAccountId causes games to crash on boot.
We should investigate this with a hwtest and either stub it properly or implement it.

The default username for now is "yuzu".
We should eventually allow the creation of users in the emulator and have the ability to modify their parameters.

In IApplicationFunctions::PopLaunchParameter we tell the games that they were launched as user id 1.

We only emulate a single user id for now.

Tidies up namespace declarations

* Updated ACC with more service names

* Updated SVC with more service names

* Updated set with more service names

* Updated sockets with more service names

* Updated SPL with more service names

* Updated time with more service names

* Updated vi with more service names