feat: add Base Account SDK connector

[youssefea]

Add @base-org/account as an EVM connector for Web3Auth, enabling developers to
use Base Account SDK as a wallet option in modal and no-modal flows.

Changes:

• New BaseAccountConnector extending BaseEvmConnector with full lifecycle
• Add BASE_ACCOUNT to WALLET_CONNECTORS and CONNECTOR_NAMES
• Skip AA wrapping for Base Account (already a smart account provider)
• Add @base-org/account as optional peer dependency
• Add Base logo asset and constant for modal UI

Motivation and Context

Enable Web3Auth users to connect via Base Account SDK, which provides a smart
account wallet experience on Base chain. This gives developers another wallet
option alongside existing connectors like Coinbase and MetaMask.

Jira Link: N/A

Description

• Created BaseAccountConnector class in
  packages/no-modal/src/connectors/base-account-connector/ following the same
  pattern as CoinbaseConnector
• Connector dynamically imports @base-org/account SDK and exposes its
  EIP-1193 provider
• Auto-derives appName, appLogoUrl from site metadata and appChainIds
  from configured EIP-155 chains
• Added guard in noModal.ts to skip AA wrapping for Base Account since it's
  already a smart account provider
• Added @base-org/account ^2.5.1 as optional peer dependency
• Added Base logo SVG asset and BASE_ACCOUNT_LOGO constant for modal UI
• Re-exported connector from @web3auth/modal package

How has this been tested?

• Lint passes for no-modal package (0 errors, only pre-existing warnings)
• TypeScript compilation passes for all new connector files (pre-existing TS
  errors in other files unrelated to this PR)
• Code follows existing connector patterns (CoinbaseConnector,
  MetaMaskConnector)
• Manual testing pending with demo app on Base mainnet/sepolia

Screenshots (if appropriate):

N/A

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality
  to not work as expected)

Checklist:

• My code follows the code style of this project. (run lint)
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.
• My code requires a db migration.

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