Add Table manipulation methods

[Pedrohgv]

Is your feature request related to a problem? Please describe.
gspread currently doesn't support the manipulation of the new Table entity on Google Sheets. Tables are a neat feature that increase the flexibility of the Google Sheets tool, so manipulating tables using Python is a great advantage.

Describe the solution you'd like
Methods like creat_table,add_table_row`, etc

Describe alternatives you've considered
None

Additional context
I created a modified version of the Worksheet object, and can append rows to table while automatically extending them, so I know this is possible using teh Google Sheets API

[alifeee]

hi :] thanks for the suggestion

please see #1570

[Pedrohgv]

@alifeee PR raised in #1578