chore: add help to Makefile

Makefile

@@ -1,5 +1,11 @@
-build:
+.PHONY: build
+
+build: ## Generate resume locally
 	pnpm install
 	pnpm build
 
-.PHONY: build run
+help: ## Show this help
+	@echo "Usage: make [target]"
+	@echo ""
+	@echo "Targets:"
+	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage: make [target]\n\nTargets:\n"} /^[a-zA-Z_-]+:.*?##/ { printf "  %-30s %s\n", $$1, $$2 }' $(MAKEFILE_LIST)