Use a single lvgl submodule for all apps

find-lvgl-sources.sh

@@ -0,0 +1,27 @@
+#!/bin/sh
+
+# Copyright 2022 Johannes Marbach, Oliver Smith
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+
+find "$1/src" -name 'lv_init.c'
+find "$1/src/core" -name '*.c'
+find "$1/src/dev" -name '*.c'
+find "$1/src/display" -name '*.c'
+find "$1/src/draw" -name '*.c'
+find "$1/src/drivers" -name '*.c'
+find "$1/src/extra" -name '*.c'
+find "$1/src/extra/widgets/keyboard" -name '*.c'
+find "$1/src/extra/widgets/msgbox" -name '*.c'
+find "$1/src/extra/widgets/span" -name '*.c'
+find "$1/src/indev" -name '*.c'
+find "$1/src/font" -name '*.c'
+find "$1/src/hal" -name '*.c'
+find "$1/src/layouts" -name '*.c'
+find "$1/src/libs" -name '*.c'
+find "$1/src/misc" -name '*.c'
+find "$1/src/osal" -name '*.c'
+find "$1/src/stdlib" -name '*.c'
+find "$1/src/tick" -name '*.c'
+find "$1/src/themes" -name '*.c'
+find "$1/src/widgets" -name '*.c'