File-scoped namespaces: Algorithms, Other, Problems, Search

[gmottajr]

Issue 425 - Migrate to DotNet 8 - File-scoped namespaces: Algorithms, Other, Problems, Search

Please let me know whether or not it would be necessary to create new unit tests for this change.

Motivation and Context
Github issue #425: Proposed to update to File-scoped namespaces. It was requested to perform the changes in a few PRs to make them smaller and easier to review. This is the one only meant to update .NET version.

• 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

[codecov]

Codecov Report

Attention: 215 lines in your changes are missing coverage. Please review.

Comparison is base (3d92c39) 94.50% compared to head (2786dc5) 94.50%.

Files	Patch %	Lines
Algorithms/Search/AStar/AStar.cs	0.00%	65 Missing ⚠️
Algorithms/Search/AStar/PriorityQueue.cs	0.00%	56 Missing ⚠️
Algorithms/Search/AStar/VecN.cs	0.00%	38 Missing ⚠️
Algorithms/Search/AStar/Node.cs	0.00%	26 Missing ⚠️
Algorithms/Other/RGBHSVConversion.cs	89.47%	0 Missing and 8 partials ⚠️
Algorithms/Search/FibonacciSearcher.cs	88.57%	2 Missing and 2 partials ⚠️
Algorithms/Search/RecursiveBinarySearcher.cs	77.77%	0 Missing and 4 partials ⚠️
...thms/Problems/NQueens/BacktrackingNQueensSolver.cs	95.23%	0 Missing and 2 partials ⚠️
Algorithms/Problems/StableMarriage/GaleShapley.cs	92.00%	1 Missing and 1 partial ⚠️
Algorithms/Search/BinarySearcher.cs	84.61%	0 Missing and 2 partials ⚠️
... and 7 more

Additional details and impacted files

@@ Coverage Diff @@ ## master #431 +/- ## ======================================= Coverage 94.50% 94.50% ======================================= Files 234 234 Lines 9843 9843 Branches 1455 1455 ======================================= Hits 9302 9302 Misses 381 381 Partials 160 160 

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

[siriak]

Looks good, thanks!