Add Dummy Applet to Replace NotImplementedException

[Jacobwasbeast]

Currently, in Ryujinx, if an app attempts to open an unimplemented applet, it crashes. This change adds a dummy applet to send a dummy response instead of crashing and logs the applet.

[github-actions[bot]]

Download the artifacts for this pull request:

• ryujinx-Release-1.2.0+d8d1269-linux_arm64

• ryujinx-Release-1.2.0+d8d1269-linux_x64

• ryujinx-Release-1.2.0+d8d1269-macos_universal

• ryujinx-Release-1.2.0+d8d1269-win_x64

  GUI-less (SDL2)

• sdl2-ryujinx-headless-Release-1.2.0+d8d1269-linux_arm64

• sdl2-ryujinx-headless-Release-1.2.0+d8d1269-linux_x64

• sdl2-ryujinx-headless-Release-1.2.0+d8d1269-macos_universal

• sdl2-ryujinx-headless-Release-1.2.0+d8d1269-win_x64

  Only for Developers

• ryujinx-Debug-1.2.0+d8d1269-linux_arm64

• sdl2-ryujinx-headless-Debug-1.2.0+d8d1269-linux_arm64

• ryujinx-Debug-1.2.0+d8d1269-linux_x64

• sdl2-ryujinx-headless-Debug-1.2.0+d8d1269-linux_x64

• ryujinx-Debug-1.2.0+d8d1269-macos_universal

• sdl2-ryujinx-headless-Debug-1.2.0+d8d1269-macos_universal

• ryujinx-Debug-1.2.0+d8d1269-win_x64

• sdl2-ryujinx-headless-Debug-1.2.0+d8d1269-win_x64