Make the interface suitable for mobile devices

[vincentcourtois]

Context

As the application is mainly a production prototype with a slightly better code quality, it lacks some features, mainly being "mobile-first". Nowadays mobiles are a great part of the used devices to display a website and we should be able to access data throughout this medium just as on a desktop. Interfaces should be reworked to be usable on a mobile device, aither for the administration part, or the synthesizer stage itself.

Subtasks

• [ ] https://github.com/modular-synthesizer/frontend/issues/40
• [ ] https://github.com/modular-synthesizer/frontend/issues/41
• [ ] https://github.com/modular-synthesizer/frontend/issues/42
• [ ] https://github.com/modular-synthesizer/frontend/issues/43
• [ ] https://github.com/modular-synthesizer/frontend/issues/44
• [ ] https://github.com/modular-synthesizer/frontend/issues/45

Notes

• The behaviours on desktop SHOULD be changed as little as possible to keep the current interface correctly running
• Some studies MIGHT be necessary to convert some elements to mobile.