fix: track deployed account by salt; make deployers a mapping

[coffeexcoin]

PR-Codex overview

This PR focuses on enhancing the authorization mechanism for deployers in the AccountFactory and related contracts, improving security by ensuring only authorized deployers can perform certain actions.

Detailed summary

• Updated checks for deployer authorization in AGWAccount.sol and AAFactoryPaymaster.sol.
• Added authorizedDeployers mapping to AccountFactory for managing deployer permissions.
• Changed event from DeployerChanged to DeployerAuthorized.
• Modified setDeployer function to allow setting deployer authorization.
• Enhanced getAddressForSalt to check if the account is already deployed.

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