jdbc: metadata: getProcedureColumns() / getFunctionColumns() #118

DatabaseMetaData.getProcedureColumns().
DatabaseMetaData.getFunctionColumns().

Don't sure it is possible in Tarantool. Don't sure it is mandatory in JDBC.
JDBC API states 'Some databases may not return the column descriptions for a
procedure' for getProcedureColumns(), but has no similar note for
getFunctionColumns().

A procedure / a function differences: https://www.guru99.com/subprograms-procedures-functions-pl-sql.html