[Deliverable] Reliable Qaku & library

[plopezlpz]

Summary

Improve Qaku reliability by integrating SDS and recent feedback from Comms Hubs. Write an app protocol specification describing app behaviour and encryption, to help assess security and scalability; deliver a separate library that implements said protocol.

Tasks

• vpavlin/qaku@c7f5341
• vpavlin/qaku@3355d90
• vpavlin/qaku@1ec6d15
• Qaku FURPS: https://www.notion.so/Waku-FURPS-1498f96fb65c803faedef2a591c22c00#1828f96fb65c80db9d98d5f2f8aaef52
• [Milestone] Extract library from Qaku frontend vpavlin/qaku#13