Initial commit: kport - SSH Port Forwarder TUI

- Interactive TUI for SSH port forwarding
- Reads from ~/.ssh/config for host selection
- Automatic port detection on remote hosts
- Manual port forwarding option
- Graceful error handling and connection timeouts
- Built with Bubble Tea framework

Co-authored-by: Ona <no-reply@ona.com>

app.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"fmt"
+
+	tea "github.com/charmbracelet/bubbletea"
+)
+
+// App represents the main application
+type App struct {
+	model *Model
+}
+
+// NewApp creates a new application instance
+func NewApp() *App {
+	return &App{
+		model: NewModel(),
+	}
+}
+
+// Run starts the application
+func (a *App) Run() error {
+	// Create the Bubble Tea program
+	p := tea.NewProgram(a.model, tea.WithAltScreen())
+	
+	// Run the program
+	if _, err := p.Run(); err != nil {
+		return fmt.Errorf("failed to run TUI application: %w", err)
+	}
+	
+	return nil
+}