feat: add psql command for table meta information

Description

• Add support of meta information psql commands (\d, \d+, \dt, \dt+, \di, \di+, \l+) with proper measures to keep the data private
• Add ability to use psql with file option

• the MR description has been reviewed
• this MR contains text changes and they have been reviewed OR there are no texts changes
• this MR contains GUI/CLI changes and they have been reviewed OR there are no GUI/CLI changes
• this MR contains API changes and they have been reviewed OR there are no API changes

Related issue

Closes #40 (closed).

Examples