refactor!: cobra migrate

cli/server/server.go

@@ -1,19 +1,10 @@
 package server
 
-import (
-	"github.com/urfave/cli/v3"
-)
+import "github.com/spf13/cobra"
 
 // ServerCommand defines the `abra server` command and its subcommands
-var ServerCommand = cli.Command{
-	Name:      "server",
-	Aliases:   []string{"s"},
-	Usage:     "Manage servers",
-	UsageText: "abra server [command] [arguments] [options]",
-	Commands: []*cli.Command{
-		&serverAddCommand,
-		&serverListCommand,
-		&serverRemoveCommand,
-		&serverPruneCommand,
-	},
+var ServerCommand = &cobra.Command{
+	Use:     "server [cmd] [args] [flags]",
+	Aliases: []string{"s"},
+	Short:   "Manage servers",
 }