Packaging: Refactor the cpp libraries

This PR separates the core cpp packs into `codeql/cpp-queries` and
`codeql/cpp-all`.

There are very few lines of code changed. Almost all changes are moving
files around.

cpp/ql/lib/semmle/code/cpp/ir/PrintIR.ql

@@ -0,0 +1,8 @@
+/**
+ * @name Print IR
+ * @description Outputs a representation of the IR graph
+ * @id cpp/print-ir
+ * @kind graph
+ */
+
+import implementation.aliased_ssa.PrintIR