Move git submodule code into the git main repo

switch_submodule_main_repo.sh

#! /bin/bash

#
# WARNING: You will lose all git history of the submodule
#

$submodule_path=''
$backup_path=''

rm -rf $submodule_path/.git
cp -a $submodule_path $backup_path
git submodule deinit -f $submodule_path
git rm -f $submodule_path
git commit -m 'Remove submodule'
cp -a $backup_path $submodule_path
git add $submodule_path
git commit -m 'Add code submodule'