Restructure, move launcher to astal gtk4

config/ags/launcher/ui/AppLauncher.tsx

@@ -1,31 +0,0 @@
-import { App, Astal, Gtk, Gdk } from "astal/gtk3"
-import { Variable } from "astal"
-
-const time = Variable("").poll(1000, "date")
-
-export default function AppLauncher(gdkmonitor: Gdk.Monitor) {
-    const { TOP, LEFT, RIGHT } = Astal.WindowAnchor
-
-    return <window
-        className="Bar"
-        gdkmonitor={gdkmonitor}
-        exclusivity={Astal.Exclusivity.EXCLUSIVE}
-        anchor={TOP | LEFT | RIGHT}
-        application={App}>
-        <centerbox>
-            <button
-                onClicked="echo hello"
-                halign={Gtk.Align.CENTER}
-            >
-                Welcome to AGS!
-            </button>
-            <box />
-            <button
-                onClicked={() => print("hello")}
-                halign={Gtk.Align.CENTER}
-            >
-                <label label={time()} />
-            </button>
-        </centerbox>
-    </window>
-}