Add functionality to import scenarios from a local directory

- Introduce `import-scenarios` subcommand to import scenarios from a specified local directory.
- Implement the `ImportScenarios` method in `registry.go`.

cmd/commands/commands/maintenance/commands/import_scenarios.go

@@ -0,0 +1,41 @@
+package commands
+
+import (
+	"fmt"
+	cnappgoat "github.com/ermetic-research/CNAPPgoat"
+	"github.com/ermetic-research/CNAPPgoat/cmd/commands/common"
+	"github.com/sirupsen/logrus"
+	"github.com/urfave/cli/v2"
+)
+
+var ImportScenariosCommand = &cli.Command{
+	Name:  "import-scenarios",
+	Usage: "maintenance subcommand to import scenarios from a local directory to the CNAPPgoat registry",
+	Flags: []cli.Flag{
+		&cli.StringFlag{
+			Name:    "directory",
+			Usage:   "Directory to import scenarios from",
+			Aliases: []string{"d"},
+			Value:   "",
+		},
+	},
+	Before: func(c *cli.Context) error {
+		if err := common.CommandBefore(c); err != nil {
+			return err
+		}
+
+		if c.String("directory") == "" {
+			return fmt.Errorf("directory flag is required in import-scenarios subcommand")
+		}
+
+		return nil
+	},
+	Action: func(c *cli.Context) error {
+		registry := c.Context.Value("CNAPPgoatModuleRegistry").(*cnappgoat.Registry)
+		logrus.Infof("importing scenarios from %s", c.String("directory"))
+		if _, err := registry.ImportScenarios(c.String("directory")); err != nil {
+			return err
+		}
+		return nil
+	},
+}

cmd/commands/commands/maintenance/maintenanace.go

@@ -20,6 +20,7 @@ var MaintenanceCommand = &cli.Command{
 		plugins.PluginsCommand,
 		stacks.StacksCommand,
 		commands.GetScenariosCommand,
+		commands.ImportScenariosCommand,
 	},
 	Hidden: true,
 }

registry.go

@@ -117,6 +117,10 @@ func (r *Registry) SetState(scenario *Scenario, state State) error {
 	return r.storage.WriteStateToFile(r.scenarios[scenario.ScenarioParams.ID], state)
 }
 
+func (r *Registry) ImportScenarios(path string) (map[string]*Scenario, error) {
+	return r.storage.updateScenariosFromFolder(path)
+}
+
 func sortScenarios(scenarios []*Scenario) {
 	sort.Slice(scenarios, func(i, j int) bool {
 		return scenarios[i].ScenarioParams.ID < scenarios[j].ScenarioParams.ID