Mark system version fields as generated in tables

https://docs.microsoft.com/en-us/sql/relational-databases/tables/temporal-tables

The columns in temporal tables that are used for system versioning need to be marked as generated.  They can not be populated when adding / modifying records.

Author: hhansell

EntityFramework.Reverse.POCO.Generator/EF.Reverse.POCO.Core.ttinclude

@@ -1651,6 +1651,7 @@ SELECT TOP (0) sc.name AS SchemaName,
         CAST(COLUMNPROPERTY(OBJECT_ID(sn.base_object_name), c.name, 'IsIdentity') AS BIT) AS IsIdentity,
         CAST(CASE WHEN COLUMNPROPERTY(OBJECT_ID(QUOTENAME(sc.NAME) + '.' + QUOTENAME(o.NAME)), c.NAME, 'IsIdentity') = 1 THEN 1
                   WHEN COLUMNPROPERTY(OBJECT_ID(QUOTENAME(sc.NAME) + '.' + QUOTENAME(o.NAME)), c.NAME, 'IsComputed') = 1 THEN 1
+                  WHEN COLUMNPROPERTY(OBJECT_ID(QUOTENAME(sc.NAME) + '.' + QUOTENAME(o.NAME)), c.NAME, 'GeneratedAlwaysType') > 0 THEN 1
                   WHEN ISNULL(TYPE_NAME(c.system_type_id), t.NAME) = 'TIMESTAMP' THEN 1
                   WHEN ISNULL(TYPE_NAME(c.system_type_id), t.NAME) = 'UNIQUEIDENTIFIER'
                        AND LOWER(ISNULL(CONVERT(NVARCHAR(4000), OBJECT_DEFINITION(c.default_object_id)), '')) LIKE '%newsequentialid%' THEN 1