CppUtilities

https://JimFawcett.github.io/CppUtilities.html

Code, String, Test Utilities, and more

These utilities are used in a lot of my code, which will appear in other repositories. Many provide all their functionality in header files, but provide cpp files for demonstration.

Expected Changes

1. FileSystem and DirExplorers will be moved to their own repositories and removed
2. SingletonLogger will be redesigned
3. Construction tests - cpp mains in each of the Utility projects - will be redesigned
4. Regression tests - groups of tests that use a single-user test harness found in TestUtilities - will be added to most of the Utilities.