Add algorithm IsPrimeNumber

[khanhkhanhlele]

• I have performed a self-review of my code
• My code follows the style guidelines of this project
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Comments in areas I changed are up to date
• I have added comments to hard-to-understand areas of my code
• I have made corresponding changes to the README.md

[Copilot]

Pull Request Overview

This PR adds a new deterministic prime number checker to the Algorithms.Numeric namespace, implementing an optimized trial division algorithm using the 6k±1 optimization technique. This complements the existing Miller-Rabin probabilistic primality test by providing a simpler, deterministic alternative suitable for smaller integers.

• Implements PrimeChecker.IsPrime() method using trial division with 6k±1 optimization
• Adds comprehensive unit tests covering edge cases, small primes, and composite numbers
• Provides clear documentation explaining the algorithm and its optimization approach

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
Algorithms/Numeric/PrimeChecker.cs	New static class implementing optimized trial division algorithm for primality testing
Algorithms.Tests/Numeric/PrimeNumberTest.cs	Comprehensive test suite with 14 test cases covering negative numbers, zero, primes, and composites

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.86%. Comparing base (ce9915e) to head (80c7cd6).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #562   +/-   ##
=======================================
  Coverage   96.85%   96.86%           
=======================================
  Files         287      288    +1     
  Lines       11861    11882   +21     
  Branches     1706     1712    +6     
=======================================
+ Hits        11488    11509   +21     
  Misses        237      237           
  Partials      136      136           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[Copilot]

Pull Request Overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[siriak]

Looks good, thanks!