add phony targets

Makefile

@@ -26,3 +26,5 @@ docbuild:
 
 docserve:
 	mdbook serve documentation
+
+.PHONY: tests tests_dev format bench docbuild docserve

tests/Makefile

@@ -29,4 +29,4 @@ types:
 	$(CC) ./types.c $(INCLUDE) -Wall -Wextra -O3 -ftime-report -o ./$(OUTDIR)/$@.exe
 	./$(OUTDIR)/$@.exe
 
-.PHONY: main dev clean lcov types
+.PHONY: main dev single clean lcov types