Update `hardhat account`, support solana

[lukema95]

related issue: #187

1. Support automatic generation of Solana private keys. When using the --save option, store it in the SOLANA_PRIVATE_KEY environment variable in the .env file.
2. Support recovery using Solana private key when using the --recover option. When ~/.config/solana/id.json exists locally, automatically load that private key. When it doesn't exist locally, users can input the private key in the command line or skip this step.
3. Maintain backward compatibility. Locally, store PRIVATE_KEY, EVM_PRIVATE_KEY, and BTC_PRIVATE_KEY environment variables in the .env file, and their values are the same.

Summary by CodeRabbit

• New Features

  • Introduced support for Solana wallets alongside EVM wallets.
  • Added functionality to retrieve Solana wallets from local files or user input.
  • Enhanced console output to display Solana wallet details upon creation.

• Improvements

  • Updated prompts for clarity when entering recovery information.
  • Enhanced environment variable management to include Solana private keys.

[lukema95]

npx hardhat account --save  

    🔑 EVM Private key: 49db34db2e853bda91c17828eb614173573df9ec200bc563217aeb36687f2e0a

    🔑 Solana Private key: 2kP9uN3ySc25UNqhqqTWz5Vt1vRQpcjfgmcJ346NERKaTwUq99nwbVsPg61znaMTnwBHbYyAGnkKRmKgjJhhWq73

    🔐 EVM Mnemonic phrase: level treat gossip actress mistake parent trouble excite wild tone offer time

    😃 EVM address: 0xD7043474A099Cad2a0A3c12F746BA5A9aD74e85f
    😃 Bitcoin address: tb1qg5xxzl4qzn6pgee53a7kjve8lvewk43r8kpcjc
    😃 Bech32 address: zeta16uzrga9qn89d9g9rcyhhg6a94xkhf6zlne0vkz

    😃 Solana address: 2bZFnp4xkrhovr1ahDiuu7D8JxdoaWPyrptF4vDuy7ru

[lukema95]

@fadeev pls check

[fadeev]

Looking good!

[coderabbitai[bot]]

📝 Walkthrough

📝 Walkthrough

## Walkthrough The changes in this pull request introduce functionality for handling Solana wallets in the `account.ts` file, alongside existing support for EVM wallets. A new method, `getSolanaWalletFromLocalFileOrInput`, is added to facilitate wallet retrieval from a configuration file or user input. The `savePrivateKey` function is modified to optionally handle Solana private keys, and various variable names are updated for clarity. Additionally, prompts for user input have been refined to improve user experience. ## Changes | File | Change Summary | |----------------------------------------|-----------------------------------------------------------------------------------------------------------| | packages/tasks/src/account.ts | - Added method `getSolanaWalletFromLocalFileOrInput` for Solana wallet retrieval.
- Updated method signature of `savePrivateKey` to accept an optional `solanaPrivateKey`.
- Modified prompt in `getWalletFromRecoveryInput` for clarity.
- Changed variable names to `evmWallet` and `solanaWallet` in `main` function.
- Enhanced console output for Solana wallet creation. | ## Possibly related PRs - **#185**: The changes in `balances.ts` regarding the handling of Solana private keys and the introduction of new environment variables directly relate to the enhancements made in `account.ts` for managing Solana wallets and private keys. ## Suggested reviewers - fadeev

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