Tests reworked - CI might not work

tests/Makefile

@@ -1,22 +0,0 @@
-CC = gcc
-CFLAGS = -std=c11 -Wall -Wextra
-CFLAGS += -Wno-unused -Wno-missing-braces
-
-main: FORCE
-	$(CC) foreach.c -o foreach.exe $(CFLAGS)
-	./foreach.exe
-	$(CC) iterators.c -o iterators.exe $(CFLAGS)
-	./iterators.exe
-	$(CC) contains.c -o contains.exe $(CFLAGS)
-	./contains.exe
-	$(CC) types.c -o types.exe $(CFLAGS)
-	./types.exe
-	make -C ./sep
-
-dev: main
-	rm *.exe ./sep/*.o ./sep/*.exe
-
-windev: main
-	del *.exe .\\sep\\*.o .\\sep\\*.exe
-
-FORCE: