Create Package third-party sound notices

The Machine Linker sound assets are derived from Modular Routers by desht.
Modular Routers is distributed under the MIT License.
Copyright (c) 2016 Des Herriott.
Source: https://github.com/desht/ModularRouters

Included files:
- assets/createpackage/sounds/machine_linker_success.ogg, from assets/modularrouters/sounds/success.ogg
- assets/createpackage/sounds/machine_linker_error.ogg, from assets/modularrouters/sounds/error.ogg
- assets/createpackage/sounds/machine_linker_thud.ogg, from assets/modularrouters/sounds/thud.ogg

The Modular Routers README identifies its sounds as free sound assets from:
- Scrampunk, https://freesound.org/people/Scrampunk/sounds/345297/ - Creative Commons Attribution 4.0
- Autistic Lucario, https://freesound.org/people/Autistic%20Lucario/sounds/142608/ - Creative Commons Attribution 4.0
- Reitanna, https://freesound.org/people/Reitanna/sounds/332661/ - Creative Commons 0

No code from Modular Routers' Botania-derived me.desht.modularrouters.client.fx package is included.
