tdbq: full select, insertion and deletion of binary data

[krizhanovsky]

Currently there is no way to adequately manage Tempesta filter table. At least following thing must be supported:

1. full select, so # ./tdbq -a select -t filter must show all the rules and preferably in relatively human readable format (however filter must be replaced in regard to nft);
2. binary insert - tdbq must be able to store binary data plus to text data;
3. delete particular record.
4. Updates are also very wished.