Initial data commit

Task/Simple-windowed-application/F-Sharp/simple-windowed-application.fs

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+open System.Windows.Forms
+
+let mutable clickCount = 0
+
+let form = new Form()
+
+let label = new Label(Text = "There have been no clicks yet.", Dock = DockStyle.Top)
+form.Controls.Add(label)
+
+let button = new Button(Text = "Click me", Dock = DockStyle.Bottom)
+button.Click.Add(fun _ ->
+    clickCount <- clickCount+1
+    label.Text <- sprintf "Number of clicks: %i." clickCount)
+form.Controls.Add(button)
+
+Application.Run(form)