Fix style errors: IDE0028, IDE0290, IDE0300 & IDE0301

[atifaziz]

This PR addresses the following style warnings/errors:

• IDE0028: Use primary constructor
• IDE0290: Use primary constructor
• IDE0300: Collection initialization can be simplified
• IDE0301: Collection initialization can be simplified

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 85.71429% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 92.09%. Comparing base (5bf0bbc) to head (7ccea7a).

Files	Patch %	Lines
MoreLinq/Maxima.cs	75.00%	0 Missing and 1 partial :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1062 +/- ## ========================================== - Coverage 92.11% 92.09% -0.02% ========================================== Files 112 112 Lines 3372 3367 -5 Branches 1051 1051 ========================================== - Hits 3106 3101 -5 Misses 199 199 Partials 67 67 ```

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