HLE/Applets: Implemented a dummy Mii Selector applet.

This prevents some games (like Super Mario 3D Land) from freezing when trying to launch it, however, it's not complete and won't let you go past Mii selection as the parameter structure hasn't been reverse engineered yet.

gsp_gpu: Change 0 literal to nullptr

hle: Update service function tables

emitter: constexpr/misc changes

Common: Get rid of alignment macros

Fix attribute mapping in vs debugger

Fix missing return

renderer_base: Minor changes

This was removed in Dolphin as there were no particular uses for it.
I'm sure the same will apply to citra.

The gl rasterizer already uses alignas,
so we may as well move everything over.

Output errors in GUI

There's no reason to allow direct access to the unique_ptr instance. Only
its contained pointer.

Add error popup when citra initialization failed

AudioCore: Implement Pipe 2

Set the appropriate locale to get float conversion working using to_string

Pipe 2 is a DSP pipe that is used to initialize both the DSP hardware (the
application signals to the DSP to initialize) and the application (the DSP
provides the memory location of structures in the shared memory region).

Pica: Write depth value even when depth test is disabled

Memory: Do correct Phys->Virt address translation for non-APP linheap

core: Use unrestricted union to hold storage of ResultVal value

This has been confirmed on hardware. Fixes Etrian Odyssey IV.

DSP: Print hash of firmware to console

Loader/NCCH: Log the program ID during loading

This is useful for all sorts of things, but mainly to identify save
folders more easily.