Moved is.lower.R to string_manipulation folder #255

	name: Directory/Filename Formatter workflow
	on: [push, pull_request]

	jobs:
	main:
	name: (Directory) Formatter
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: Setup Git configuration
	run: \|
	git config --global user.name 'autoprettier'
	git config --global user.email '[email protected]'
	git remote set-url origin https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/$GITHUB_REPOSITORY
	- name: Filename Formatter
	run: \|
	IFS=$'\n'
	for fname in `find . -type f -name '.R' -o -name '.R'`
	do
	echo "${fname}"
	new_fname=`echo ${fname} \| tr ' ' '_'`
	echo " ${new_fname}"
	new_fname=`echo ${new_fname} \| tr 'A-Z' 'a-z'`
	echo " ${new_fname}"
	new_fname=`echo ${new_fname} \| tr '-' '_'`
	echo " ${new_fname}"
	if [ ${fname} != ${new_fname} ]
	then
	echo " ${fname} --> ${new_fname}"
	git "mv" "${fname}" ${new_fname}
	fi
	done
	git commit -am "Formatting filenames ${GITHUB_SHA::8}" \|\| true
	- name: Update DIRECTORY.md
	run: \|
	wget https://raw.githubusercontent.com/TheAlgorithms/scripts/main/build_directory_md.py
	python3 build_directory_md.py R . .R,.r > DIRECTORY.md
	git diff
	git commit -m "Update DIRECTORY.md" DIRECTORY.md \|\| true
	git push --force origin HEAD:$GITHUB_REF \|\| true

Provide feedback