Add cluster command

[6za]

Create a family of commands for cluster:

Changes:
go run . create --dry-run=true

go run . create  --dry-run=true
Init actions: 4 expected tasks ...

LOG: 2022/07/19 16:52:27.822981 /home/developer/app/cmd/init.go:220: init started
Logging at: /home/developer/app/logs/log_1658249547.log
LOG: 2022/07/19 16:52:27.823885 /home/developer/app/pkg/helpers.go:132: Using config file: /home/developer/.kubefirst
Error: unknown command "create" for "kubefirst"
Run 'kubefirst --help' for usage.
exit status 1

New Command:
go run . cluster --help

Init actions: 4 expected tasks ...

LOG: 2022/07/19 16:51:04.343238 /home/developer/app/cmd/init.go:220: init started
Logging at: /home/developer/app/logs/log_1658249464.log
LOG: 2022/07/19 16:51:04.344766 /home/developer/app/pkg/helpers.go:132: Using config file: /home/developer/.kubefirst
Cluster Level operations like create a new cluster provisioned with all kubefirst goodies.

Usage:
  kubefirst cluster [flags]
  kubefirst cluster [command]

Available Commands:
  create      create a kubefirst management cluster

Flags:
  -h, --help   help for cluster

Use "kubefirst cluster [command] --help" for more information about a command.

New Create:
go run . cluster create --dry-run=true

Regular create logs 

Signed-off-by: 6za 53096417+6za@users.noreply.github.com

[pagottoo]

lgtm