Add support for installation via Homebrew

[guygiat]

Is your feature request related to a problem? Please describe.

In order to improve the installation ux it would be great that MacOS users will be able to install the cli from homebrew.

Describe the solution you would like

brew install conjur-cli

Additional context

We already have a couple of homebrew formulas here: https://github.com/cyberark/homebrew-tools We can add our cli to it.