Add WireGuard TUI implementation

- Add Go TUI with bubbletea for WireGuard management
- Implement client CRUD operations with QR code generation
- Add configuration and validation modules
- Install/update scripts for client setup
- Update Makefile to build binaries to bin/ directory
- Add .gitignore for Go projects

internal/wireguard/tea_messages.go

@@ -0,0 +1,27 @@
+package wireguard
+
+import (
+	"time"
+
+	tea "github.com/charmbracelet/bubbletea"
+)
+
+// StatusTickMsg is sent when it's time to refresh the status
+type StatusTickMsg struct{}
+
+// RefreshStatusMsg is sent when manual refresh is triggered
+type RefreshStatusMsg struct{}
+
+// Tick returns a tea.Cmd that will send StatusTickMsg at the specified interval
+func Tick(interval int) tea.Cmd {
+	return tea.Tick(time.Duration(interval)*time.Second, func(t time.Time) tea.Msg {
+		return StatusTickMsg{}
+	})
+}
+
+// ManualRefresh returns a tea.Cmd to trigger immediate status refresh
+func ManualRefresh() tea.Cmd {
+	return func() tea.Msg {
+		return RefreshStatusMsg{}
+	}
+}