Command-line completion (tab completion / autocompletion)

[AlekseyMishanin]

Issue Details

When I type the adguardvpn-cli subcommand on the command line, I have to type it in full. It's not very user friendly. For example, this is how I suffer:

adguardvpn_cli_issue.webm

Please allow me to use your command-line VPN client the same way I use grep:

grep_example.webm

Proposed solution

Improve the install.sh

Alternative solution

Ignore me