Redone tests

./codecov is a stalled version for code coverage. It will be merged with main when the library is done with breaking changes

tests/codecov/main.c

@@ -0,0 +1,35 @@
+#include "unt/deque.c"
+#include "unt/hashmap.c"
+#include "unt/hashset.c"
+#include "unt/heap.c"
+#include "unt/linkedlist.c"
+#include "unt/list.c"
+#include "unt/queue.c"
+#include "unt/stack.c"
+#include "unt/treemap.c"
+#include "unt/treeset.c"
+
+#include "unt/multimap.c"
+#include "unt/multiset.c"
+
+int main(void)
+{
+    uintmax_t failed = 0;
+
+    failed += deque_test();
+    failed += hashmap_test();
+    failed += hashset_test();
+    failed += heap_test();
+    failed += linkedlist_test();
+    failed += list_test();
+    failed += queue_test();
+    failed += stack_test();
+    failed += treemap_test();
+    failed += treeset_test();
+
+    /* ext */
+    failed += multimap_test();
+    failed += multiset_test();
+
+    return failed;
+}