- 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