Feat import export binary and decimal seed

[nosedam]

Description

This change allows to export and import the seed phrase in binary and decimal format. Mentioned here: https://github.com/SeedSigner/seedsigner/issues/68

https://github.com/user-attachments/assets/fbb5ff43-19ab-4228-88d1-4a4ab38b0dbe

https://github.com/user-attachments/assets/05ad84c8-5536-4660-8d6d-4f3e777bafaa

https://github.com/user-attachments/assets/444a31ea-cb51-4ee7-ba48-6cfcebba3667

https://github.com/user-attachments/assets/a6c1a8da-f86b-40df-9753-91b0f4e27dcb

This pull request is categorized as a:

• [X] New feature
• [ ] Bug fix
• [ ] Code refactor
• [ ] Documentation
• [ ] Other

Checklist

• [X] I’ve run pytest and made sure all unit tests pass before sumbitting the PR

If you modified or added functionality/workflow, did you add new unit tests?

• [ ] No, I’m a fool
• [ ] Yes
• [X] N/A (it uses the same original flows, it just uses new keyboards to translate their values to a mnemonic word and continue with original flow)

I have tested this PR on the following platforms/os:

• [ ] Raspberry Pi OS Manual Build
• [ ] SeedSigner OS on a Pi0/Pi0W board
• [X] Other (Linux VM using Seedsigner emulator)

Thanks everyone for checking the PR. All feedback is appreciated! Any changes that I need to do just tell me!