[electrum] Update trezor firmware

Summary:
Automated process for updating the firmware of Trezor devices.
You can either install the latest trezor firmware or install from a file.

Test Plan: I ran it successfully on all the supported devices

Reviewers: #bitcoin_abc, PiRK

Reviewed By: #bitcoin_abc, PiRK

Subscribers: PiRK

Differential Revision: https://reviews.bitcoinabc.org/D17798