add client skeleton

client/client.go

@@ -0,0 +1,33 @@
+package client
+
+import (
+	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/app"
+	"fyne.io/fyne/v2/container"
+	"fyne.io/fyne/v2/widget"
+)
+
+type client struct {
+	app    fyne.App
+	window fyne.Window
+}
+
+func NewClient() *client {
+	c := &client{}
+	c.app = app.New()
+	c.window = c.app.NewWindow("Hello")
+
+	hello := widget.NewLabel("Hello Fyne!")
+	c.window.SetContent(container.NewVBox(
+		hello,
+		widget.NewButton("Hi!", func() {
+			hello.SetText("Welcome :)")
+		}),
+	))
+
+	return c
+}
+
+func (c *client) Run() {
+	c.window.ShowAndRun()
+}