chore!: wallet refactoring

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• Closes: Unify wallets #1619

Release notes

Wallets are now unified in a single type generic over the signer.

In this release, we:

• Unified all the existing wallets in the SDK into a single wallet type holding a signer.

Summary

Breaking Changes

ImpersonatedAccount is removed

To achieve the same functionality instantiate a `FakeSigner:

    let impersonator = Wallet::new(FakeSigner::new(address), provider.clone());

AwsKmsSigner and GoogleKmsSigner moved

under fuels::accounts::signers::kms::aws and fuels::accounts::signers::kms::google, respectfully.

KmsWallet removed

use an ordinary Wallet now with a kms signer (aws or google)

WalletUnlocked and Wallet substituted by Wallet<Unlocked<S = PrivateKeySigner>> or Wallet<Locked>

The provider is now mandatory for Wallet::new.

Common operations in the new API:

Creating a random wallet:

a) Two step (useful when you haven't started the node but need the address)

    // Create a random private key signer
    let signer = PrivateKeySigner::random(&mut rng);
    let coins = setup_single_asset_coins(signer.address(), asset_id, 1, DEFAULT_COIN_AMOUNT);
    let provider = setup_test_provider(coins.clone(), vec![], None, None).await?;
    let wallet = Wallet::new(signer, provider);

b) One step (when you already have a provider)

    let wallet = Wallet::random(&mut rng, provider.clone());

Locking a wallet

    let locked_wallet = wallet.lock();

Creating a locked wallet

    let wallet = Wallet::new_locked(addr, provider.clone());

Wallets no longer sign

You use one of the signers for that. Or, if your wallet is unlocked, get its signer by calling wallet.signer().

ViewOnlyAccount no longer requires core::fmt::Debug and core::clone::Clone as supertraits.

Wallet no longer handles encrypting keys for disk storage

Use the fuels::accounts::Keystore for that (feature-gated under accounts-keystore)

AWS/Google kms feature flags changed

They're now accounts-signer-aws-kms and accounts-signer-google-kms.

Checklist

• All changes are covered by tests (or not applicable)
• All changes are documented (or not applicable)
• I reviewed the entire PR myself (preferably, on GH UI)
• I described all Breaking Changes (or there's none)

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Examples didn't build under newer rust versions because you cannot (still) enable features on dev deps via feature flags of your own (and it seems we tried to do that in the past but failed silently... until now).

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No changes, just moved

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sorted it and added a few words.