Conversion of numeric type without precision and scale

[OProf77]

Add_precision_and_scale_for_numeric_data_type__Add__timestamp_without_time_zone_,__datetim.patch

Currently, the conversion of numeric data type is done without precision and scale. So I changed the code in the service.cs file and now the conversion is done in decimal data type with precision and scale. Example: numeric(16,2) in MSSql decimal(16,2)

[sanamhub]

@OProf77 can you help to raise a PR for this?