Add utils

extra/utils.mk

@@ -0,0 +1,9 @@
+.PHONY: format
+
+all:
+
+format:
+	# Convert tabs to spaces
+	find ./source -type f -iname '*.[cpp\|c\|h]' -exec bash -c 'expand -t 4 "$$0" | sponge "$$0"' {} \;
+	# Remove trailing whitespaces
+	find ./source -type f -iname '*.[cpp\|c\|h]' -exec sed -i 's/ *$$//' {} \;