Add different output formats to more spacectl commands

[DDSpacelift]

User Mora, Roberto (Roberto.Mora@experian.com) says:

Currently, spacectl only supports different formats (e.g. JSON) in commands that query data.

It would be nice if commands that cause mutations also support different output formats.

spacectl stack deploy --id my-stack -o json
Incorrect Usage: flag provided but not defined: -o

Currently these commands don't return the results in any format that could be easily parsed to build advanced workflows using the CLI

FREE account stg-experian

Feature URL https://spacelift.io/changelog/requests/en/add-different-output-formats-to-more-spacectl-commands

[peterdeme]

#183