Add Electroneum Mainnet/Testnet to supported networks

[andrepatta]

Description

Add Electroneum Mainnet/Testnet to supported networks in Ethereum Ledger App.

Changes include

• Bugfix (non-breaking change that solves an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (change that is not backwards-compatible and/or changes current functionality)
• Tests
• Documentation
• Other (for changes that might not fit in any category)

Additional comments

Resources:

• Website: https://electroneum.com/
• Twitter: https://twitter.com/electroneum
• Block Explorer: https://blockexplorer.electroneum.com/
• Project Documentation: https://developer.electroneum.com/
• ChainList.org: https://chainlist.org/?search=ETN&testnets=true
• Slip-0044: https://github.com/satoshilabs/slips/blob/master/slip-0044.md (Coin type: 415; Path component: 0x8000019f; Symbol: ETN; Coin: Electroneum;

[ledger-wiz-cspm-secret-detection]

Wiz Scan Summary

IaC Misconfigurations
Total
Secrets

[vforgeoux-ledger]

Hey @andrepatta , it looks like your icon doesn't respect the guidelines (background should be white)

[andrepatta]

Hi @vforgeoux-ledger thanks for letting me know. Is it okay if I submit the correct icon on Monday?

[vforgeoux-ledger]

Yes @andrepatta , we want to merge networks PR today 🙏

[andrepatta]

Done @vforgeoux-ledger

[vforgeoux-ledger]

Included in #598