Add columnOptions.RemoveStandardColumns

[dmitrii-tolstov]

1. A columnOptions block has been added to the ClickHouseSink settings. The columnOptions block currently consists of a single element: RemoveStandardColumns.
2. RemoveStandardColumns is a list of standard fields to remove from logs. Standard fields include timestamp, level, message. New standard fields may be added in the future. For example, some users parse properties from message and store them in logs as separate fields. In this case, a separate message field is not needed. The RemoveStandardColumns setting will remove the message field.
3. In the future, it will be possible to add other settings for fields to the columnOptions block - "OrderBy", "PartitionBy", etc.