All Projects updated to .NET 6, redundant code removed and old syntax…

[nirzaf]

… changed to new style

Description

All Projects updated to .NET 6, redundant code was removed and old syntax changed to the new style of syntax to adopt C# 10

Checklist

• [ x ] An issue was first created before opening this pull request
• [ x ] The new code follows the contribution guidelines
• [ x ] I have performed a self-review of my own code
• [ x ] I have commented my code, particularly in hard-to-understand areas
• [ x ] I have made corresponding changes to the documentation
• [ x ] My changes generate no new warnings
• [ x ] I have added tests to ensure that prove my fix is effective or that my feature works
• [ x ] New and existing unit tests pass locally with my changes

[aalhour]

Hey @ivandrofly, @nirzaf, thanks for your contributions and sorry for not giving this project some love in many years. If you want to update this PR and project further just let me know here and I'll accept your PR.

[nirzaf]

Hey @ivandrofly, @nirzaf, thanks for your contributions and sorry for not giving this project some love in many years. If you want to update this PR and project further just let me know here and I'll accept your PR.

Sure, this is a best resource I used to learn Algorithm

[aalhour]

Sorry for leaving this project in a limbo state, I will modernize it tonight and put it on net10.0.