tt CLI (2.9): add connection from the cluster config

[TarantoolBot]

Product: tt CLI
Since: tt 2.9.0
Dev ticket: https://jira.vk.team/browse/TNTP-1073
Root document: https://www.tarantool.io/en/doc/latest/reference/tooling/tt_cli/connect/

SME: @ AlexandrLitkevich @ oleg-jukovec

Details

tt connect aeon path/to/config INSTANCE_NAME : added support for reading data from config file and SSL/plane connection

Added support for reading Aeon connection configuration from path/to/config file
Implemented the ability to connect via SSL or without it (plane)
Usage: tt connect aeon path/to/config INSTANCE_NAME
Improved flexibility of connection setup through external config
Added parameters for selecting connection type (SSL/plane) in the configuration file

Closes #TNTP-1073
Requested by @AlexandrLitkevich in tarantool/tt@648f98a.