Progress: Continue working on completing the remove program.

Progress: Continue working on completing the remove program.

This adds the beginnings of the runtime, unit test like, testing.
This approach for a runtime test is being done to make mocking functions easier.
The goal here is to not have actual files created and especially to have no files actually deleted.

If the delete doesn't work properly, then there should be no consequences due to not actually running any real deletes.

The current state of this simply tests the help and version parameters.
I chose this as a way to hash out the process that I am going to use.

This fixes a mistake in the individual library link name for `-lfl_directory`.

Remove unused `kt_remove_main_t *main ` declaration.

Fix documentation comments for several header files.