Refactor with asyncio

[stepansnigirev]

This RP makes a lot of changes in the architecture of Specter-DIY. As there are so many changes it would be nice if we could test and try it before we merge. Here is a build: specter-diy.bin.zip Unzip and copy .bin file to DIS_F469NI volume as usual.

Changes include:

• Full refactor of GUI and Specter logic with asyncio
• Improvements of several GUI screens:
  • a bar showing current network on top
  • autosuggest on mnemonic enter screen
• Disables USB until PIN is entered
• Changes file structure and a way how public information is stored
• Many other changes
• A few tests

[stepansnigirev]

Binary updated with new changes fixing USB communication.

[hodlwave]

No issues from me building this branch from source. I successfully tested generating a new 12 word mnemonic, and receiving/spending single key + 2/2 multisignature with a Coldcard and Specter Desktop coordinating the wallet. All communication with my computer was done with QR codes. No apparent bugs.

Also I like the network bar at the top of the screen and the word suggestion when recovering the mnemonic is super helpful :)

[stepansnigirev]

@hodlwave, thank you very much for testing!