feat: add OneKey keyring

[Akaryatrh]

Adds OneKey keyring based on OneKey libraries.

• Relates to feat: support OneKey Hardware metamask-extension#32739
• Also replaces feat: support OneKey #335

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Note

Adds OneKey hardware wallet support to the monorepo via a new keyring package.

• New @metamask/eth-onekey-keyring package with OneKeyKeyring and OneKeyWebBridge using @onekeyfe/hd-web-sdk to handle PIN/passphrase UI, passphrase state, and transport switching
• Implements unlock via xpub, HD path handling (default/BIP44/legacy), account pagination, and signing flows: transactions (incl. EIP-1559), personal messages, and EIP-712 typed data with address verification
• Extensive Jest test suites for keyring and bridge, plus package configs (jest, tsconfig, typedoc), changelog, license, and README; updates root README, tsconfig references, and yarn.lock to include the new package

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