Add wallet labels, display master fingerprint and fix Windows build

[pauloneo]

Summary

This PR includes three improvements.

1. Windows build fix

Problem
The Android build generated an invalid public/assets/protocol_modules structure on Windows because the namespace was extracted using module.path.split('/'), which does not work with Windows path separators ().

Solution
Replaced the namespace extraction with path.basename(module.path), which works correctly on both Windows and Linux.

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2. Master Fingerprint display

Problem
When multiple wallets are created from the same mnemonic using different BIP-39 passphrases, users cannot easily verify which wallet they are viewing.

Solution
Display the wallet Master Fingerprint on the account details screen, allowing users to verify the correct wallet.

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3. Custom wallet labels

Problem
When multiple accounts use the same protocol (for example several Bitcoin SegWit wallets), the account list only displays the protocol name and address, making it difficult to distinguish them.

Solution
Added support for custom wallet labels:

• enter a label when creating a wallet;
• persist the label during wallet serialization;
• restore the label when deserializing the wallet;
• display the label in the account list below the protocol name.

[sonarqubecloud]

Quality Gate failed

Failed conditions
B Maintainability Rating on New Code (required ≥ A)

See analysis details on SonarQube Cloud

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[pauloneo]

This PR has been replaced by #299, which includes the same changes plus the Sonar fixes.

Closing this one to avoid duplicate pull requests.