Add convenience function for viewAccessKeyList

[petersalomonsen]

Feature Request

Description

Add a convenience function for viewing the list of access keys for an account, similar to the existing viewAccount, viewFunction, and viewAccessKey convenience functions.

Proposed API

export async function viewAccessKeyList(
  client: NearRpcClient,
  params: {
    accountId: string;
    finality?: 'final' | 'near-final' | 'optimistic';
    blockId?: string | number;
  }
): Promise<AccessKeyList>

Implementation

The function should use the query method with request_type: 'view_access_key_list'.

Benefits

• Consistent API with other convenience functions
• Easier to discover and use than the generic query method
• Type-safe access to access key lists