Enhancement: Add help as first target to Makefile

Makefile

@@ -1,12 +1,15 @@
-.PHONY: fix sniff test
+.PHONY: fix help sniff test
 
-fix: vendor/autoload.php
+help:
+	@grep -E '^[a-zA-Z0-9_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
+
+fix: vendor/autoload.php ## Fix code style issues with phpcbf
 	vendor/bin/phpcbf --standard=PSR2 src
 
-sniff: vendor/autoload.php
+sniff: vendor/autoload.php ## Detect code style issues with phpcs
 	vendor/bin/phpcs --standard=PSR2 src -n
 
-test: vendor/autoload.php
+test: vendor/autoload.php ## Run tests with phpunit
 	vendor/bin/phpunit --verbose
 
 vendor/autoload.php: