feat: add move command to relocate SSH hosts between config files

- Add 'move' command with interactive file selector
- Implement atomic host moving between SSH config files
- Support for configs with include directives
- Add comprehensive error handling and validation
- Update help screen with improved two-column layout

cmd/move.go

@@ -0,0 +1,28 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/Gu1llaum-3/sshm/internal/ui"
+
+	"github.com/spf13/cobra"
+)
+
+var moveCmd = &cobra.Command{
+	Use:   "move <hostname>",
+	Short: "Move an existing SSH host configuration to another config file",
+	Long:  `Move an existing SSH host configuration to another config file with an interactive file selector.`,
+	Args:  cobra.ExactArgs(1),
+	Run: func(cmd *cobra.Command, args []string) {
+		hostname := args[0]
+
+		err := ui.RunMoveForm(hostname, configFile)
+		if err != nil {
+			fmt.Printf("Error moving host: %v\n", err)
+		}
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(moveCmd)
+}