* Updated `CommandLine` class to replace `ConfigurationObject` with `CommandLineOptions` for better type consistency.
* Refactored command line option setup into a separate method for clarity.
* Modified `LoggerFactory` to directly use `LoggingLevel` type in `setLoggingLevel` method, enhancing logging level management.
* Updated `CommandLineOptions` and `ConfigurationObject` to use `LoggingLevel` type instead of string for log levels.
* Modified `LoggerFactory` to set logging levels using the new `LoggingLevelMapping` methods.
* Removed the `example-usage.ts` file as it was no longer needed.
* Adjusted `Threshold` class to simplify logging level management.
