Enchance RequireFilesSize rule to be able to enforce size bounds in the entire content of a directory by optionally enabling the new recurscive flag.

The main motivation comes from the target directory that tends to store all kind of information from jar artifacts to test logs, reports, and many other things. It is not uncommon, that small seemingly innocent changes (e.g., adding a new test) can make the target directory unreasonably large consuming many GB of disk space. When such changes sneak into the project there is a high risk of causing CI/CD instability and intermittent failures that may be hard to notice.

Close #366

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