Add Fuchs_Database SSDT project (schema source of truth)

Adds the SQL Server Data Tools project for the fuchs_fds database — tables,
table types, functions and stored procedures that the backend calls (e.g.
fds__getInvoice, fds__merge_bankingtransactions, fds__tt__bankingtransactions,
fds__admin_getReportCatalog, fis_* auth). Build/model caches (bin, obj,
*.dbmdl, *.jfm, *.user) are git-ignored.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Fuchs_Database/dbo/Tables/mfr__d_#locations.sql

@@ -0,0 +1,16 @@
+CREATE TABLE [dbo].[mfr__d_#locations] (
+    [Id]              BIGINT         NULL,
+    [EntityId]        BIGINT         NULL,
+    [Property]        VARCHAR (255)  NULL,
+    [Version]         INT            NULL,
+    [AddressString]   NVARCHAR (255) NULL,
+    [Postal]          NVARCHAR (255) NULL,
+    [City]            NVARCHAR (255) NULL,
+    [State]           NVARCHAR (255) NULL,
+    [Country]         VARCHAR (15)   NULL,
+    [Longitude]       NUMERIC (8, 5) NULL,
+    [Latitude]        NUMERIC (8, 5) NULL,
+    [IsValidLocation] BIT            NULL,
+    [DateDeleted]     DATETIME       NULL
+);
+