Get client invoices

**Invoice Statuses: ** Below are the PortalDuct provided standard Invoice status across all portals. - **Draft: ** Indicates that the invoice has not yet been finalized or sent. - **Sent: ** Indicates that the invoice has been sent but has not yet been processed further. - **Pending Approval: ** Indicates that the invoice is awaiting approval. - **Approved: ** Indicates that the invoice has been approved. - **Rejected: ** Indicates that the invoice has been rejected. - **Canceled: ** Indicates that the invoice has been canceled. - **Failed: ** Indicates that a failure occurred, such as a payment or processing failure. - **Paid: ** Indicates that the invoice payment has been scheduled or already made.