Add function to retrieve company address as JSON and update invoice procedures

- Created a new function `fds__getCompanyAddressJson` to return a company's postal address as a structured JSON object.
- Modified stored procedures `fds__createInvoice`, `fds__setInvoice`, and `fds__prepInvoice` to include a new parameter `@SendToAddressJson` for handling the address data.
- Updated the invoice table and user-defined types to accommodate the new `SendToAddressJson` field.
- Ensured that the address data is properly retrieved and stored in the invoice records.

Fuchs_Database/dbo/Tables/fds__invoices.sql

@@ -25,6 +25,7 @@
     [IsCanceled]         AS               (CONVERT([bit],case when [DateCancelled] IS NULL then (0) else (1) end)),
     [Replaces_InvId]     VARCHAR (50)     NULL,
     [CustomValues]       NVARCHAR (MAX)   NULL,
+    [SendToAddressJson]  NVARCHAR (MAX)   NULL,
     [DateSent]           DATETIME         NULL,
     [UserSent]           VARCHAR (25)     NULL,
     [DateFinalized]      DATETIME         NULL,