Add a basic Makefile

Makefile

@@ -0,0 +1,28 @@
+.PHONY: default
+default: help
+
+.PHONY: help
+help:
+	@echo "make help     Show this help message"
+	@echo "make dev      Run the plugin in the development WordPress"
+	@echo "make lint     Run the code linter(s) and print any warnings"
+	@echo "make format   Automatically format code"
+	@echo "make sure     Make sure that the formatter, linter, tests, etc all pass"
+
+.PHONY: dev
+dev: vendor
+	docker compose up
+
+.PHONY: lint
+lint: vendor
+	composer lint
+
+.PHONY: format
+format: vendor
+	composer format
+
+.PHONY: sure
+sure: lint
+
+vendor: composer.json composer.lock
+	composer install