feat(u/p/sleepRand.py):Add argparse, logging functionality

feat(u/p/sleepRand.py):Add argparse, logging functionality

- argparse: - Accepts lambda factor with -p option
            - Accepts mean seconds as first positional argument
	    - Accepts verbosity factor with -v or -vv options
- logging: - Add debug and error messages to stderr using verbosity
            - factor from argparse