minor typo / spelling / clang-tidy fixes (#468)

* Minor clean-ups

- fix a couple usage of std::function
- fix a couple usage of std::string
- remove ALIGN_LOOP, which didn't work
- fix a couple explicit/noexcept
- virtual -> override

* Fix spelling typos and other minor clang-tidy

libs/utils/test/test_BinaryTreeArray.cpp

@@ -26,7 +26,7 @@ TEST(BinaryTreeArray, basic) {
     struct Node {
         size_t index = 0;
         size_t next = 0;
-        bool visited = 0;
+        bool visited = false;
     };
     Node array[256];