Explore using ragger

### Overview

Ledger has a Python library [ragger](https://github.com/LedgerHQ/ragger) they built to abstract communicating with all the various device types they are maintaining, including a virtualized test backend we can use to enhance testing of integrations this plugin allows. Further, unclear if the library we are currently using will continue to be maintained

### Specification

Swap it out

### Dependencies

https://github.com/LedgerHQ/ragger

No file, test, or entry point is named. Start by locating the plugin's current Ledger communication dependency and its integration tests, then read ragger's supported device and virtualized-backend interfaces. Done means the existing dependency is replaced and the integration tests exercise the supported Ledger backends without regressions.

索引モデルが issue の本文から書いたものです。