Artemis: Refactor Print Statements for Improved Readability and Consistency

[mike-turintech]

This pull request refactors the print statements in the App class to utilize System.out.printf instead of the previous System.out.println combined with String.format. The changes apply to various methods including SumRange, MaxArray, SumModulus, and others across different functionalities such as vector manipulation and prime calculations.

Key Changes:

• Replaced multiple instances of System.out.println(String.format(...)) with System.out.printf(...) for better readability.
• Updated print statements in methods related to single, double, vector, and prime operations.

Benefits:

• Enhanced readability of output formatting.
• Improved consistency across the codebase.

This refactor maintains the existing functionality while significantly improving the code's clarity and maintainability.