use cobra for cli

delete pkg/runner and put funcs in task
add start command

pkg/task/runner.go

@@ -1,44 +0,0 @@
-package task
-
-import (
-	"context"
-	"fmt"
-
-	tea "github.com/charmbracelet/bubbletea"
-)
-
-func (t *Task) IntroduceTask() error {
-	if t.aboutScreen == nil {
-		return fmt.Errorf("aboutScreen is not set")
-	}
-	model, err := tea.NewProgram(t.aboutScreen, tea.WithAltScreen()).Run()
-	if err != nil {
-		return err
-	}
-	if m, ok := model.(interface{ GetUserQuit() bool }); ok && m.GetUserQuit() {
-		return ErrUserQuit
-	}
-	return nil
-}
-
-func (t *Task) StartInterface(ctx context.Context, cfg TaskConfig) error {
-	if t.interfaceType == nil {
-		return fmt.Errorf("interfaceType is not set")
-	}
-
-	return t.interfaceType.Run(ctx, cfg)
-}
-
-func (t *Task) StartQuestionnaire() error {
-	if t.questionnaire == nil {
-		return fmt.Errorf("questionnaire is not set")
-	}
-	model, err := tea.NewProgram(t.questionnaire, tea.WithAltScreen()).Run()
-	if err != nil {
-		return err
-	}
-	if m, ok := model.(interface{ GetUserQuit() bool }); ok && m.GetUserQuit() {
-		return ErrUserQuit
-	}
-	return nil
-}