Add support for Curve types / v2 support

[dotmorten]

Add support for Curve types / v2 support

[alexpantyukhin]

Is there any news with this issue?

[dotMorten]

Issue still open and no one has submitted a PR to address it 🤷

[alexpantyukhin]

@dotMorten

I try the following approach:

on the SQL side:

    SELECT 
          geography_field.STAsText() geography_field
    FROM mytable

on the code side:

   var strValue = ((SqlDataReader)reader).GetSqlString(geographyFieldPosition);
   var sqlGeographyFromReader = SqlGeography.Parse(binvalue);

I found that in this case the georaphy is restored. Also I found that there is no soe flags which related with version in text when call STAsText(). Could it be the correct approach?