[feat] Ask whether we should save the config when it's different than the environment config

[svedova]

Is your feature request related to a problem? Please describe.
With the latest release, users can now provide a per-deployment-basis configuration. When the provided configuration is different than the environment configuration, we should ask the user whether they want to save it or not for future deployments:

Describe the solution you'd like

We could either display an info box when they change the config or open another confirmation modal after clicking Deploy now button.