fix(kcp, IDT, Heap, kernel): Various fixes, scrap broken memory allocator

kernel/src/CppLib/CString.hpp

@@ -0,0 +1,12 @@
+/*
+    * CString.cpp
+    * C++ string tooling
+    * Copyright (c) 2025 Daniel Hammer
+*/
+
+#pragma once
+#include <CppLib/Vector.hpp>
+
+namespace kcp {
+    vector<const char*> splitstr(const char* str, char delimiter);
+};