Better handling of wrong queries

[lyz-code]

Right now if a user enters a wrong query, such as test the plugin fails bad:

�[31mError:�[0m cannot parse search emails query `test`
   �[38;5;246m╭�[0m�[38;5;246m─�[0m�[38;5;246m[�[0mquery:1:2�[38;5;246m]�[0m
   �[38;5;246m│�[0m
 �[38;5;246m1 │�[0m �[38;5;249mt�[0m�[3
1me�[0m�[38;5;249ms�[0m�[38;5;249mt�[0m
 �[38;5;240m  │�[0m  �[31m┬�[0m  
 �[38;5;240m  │�[0m  �[31m╰�[0m�[31m─�[0m�[31m─�[0m found e expected `to`
�[38;5;246m───╯�[0m
Error detected while processing function <lambda>9922[1]..<SNR>45_on_exit[6]..function <lambda>9922[1]..<SNR>45_on_exit:
line    6:
E605: Exception not caught: CLI error, see :messages for more information

This added to the fact that it's not easy to find the documentation on how to make good queries (from within nvim) makes the functionality confusing to newcomers.

It would be nice to capture the error and guide the user on how to make good queries