CLI - ensure it's scriptable

Based on https://github.com/Joystream/joystream/issues/1571 and https://github.com/Joystream/joystream/issues/1586

• Allow providing input as flags/args/json where this is not yet implemented (some commands only provide interactive interface)
• Give user the ability to choose between more human-readable output (ie. a table) and output that can be redirected to a file / other commands (ie. raw json, created entity id etc.). Some OCLIF funcionality can probably help facilitate this (ie. --no-color flag can be used to strip any custom colors from the output, cli.table can be converted to csv by passing an additional option etc.)