refactor: relocate options classes to dedicated Options folders

Move configuration options from Core/DataAccess/DataSync/ExcelIO to
dedicated Options folders within each project for better organization.
Update all references and tests accordingly.

NEW/src/JdeScoping.Host/appsettings.json

@@ -112,16 +112,16 @@
     ]
   },
   "Auth": {
-    "UseFakeAuth": false,
     "CookieName": "ScopingTool.Auth",
-    "CookieExpirationMinutes": 480,
-    "AdminBypassUsers": []
+    "CookieExpirationMinutes": 480
   },
   "Ldap": {
     "ServerUrls": ["ldap.corp.example.com"],
     "GroupDn": "CN=ScopingTool-Users,OU=Groups,DC=corp,DC=example,DC=com",
     "SearchBase": "DC=corp,DC=example,DC=com",
-    "ConnectionTimeoutSeconds": 30
+    "ConnectionTimeoutSeconds": 30,
+    "UseFakeAuth": false,
+    "AdminBypassUsers": []
   },
   "ExcelExport": {
     "TempDirectory": "/tmp/lotfinder",