Add message page for displaying errors

internal/page/router.go

@@ -18,7 +18,7 @@ const (
 	EMAIL_ADDRESS
 	LOGS
 	CHECK_UPDATES
-	ERROR
+	MESSAGE
 )
 
 type PageCtx struct {
@@ -27,6 +27,8 @@ type PageCtx struct {
 	W, H          int32
 	RefreshConfig func()
 	NavigateTo    func(pageType)
+	Msg           string // Message to be displayed by MessagePage
+	Inst          string // Instructions to be displayed on MessagePage
 }
 
 type Router struct {
@@ -69,6 +71,8 @@ func (r *Router) NavigateTo(p pageType) {
 		r.ActivePage = &LogViewerPage{}
 	case CHECK_UPDATES:
 		r.ActivePage = &UpdateCheckPage{}
+	case MESSAGE:
+		r.ActivePage = &MessagePage{}
 	}
 
 	r.ActivePage.Init(&r.Context)