Added BalancedParenthesesChecker.cs, NextGreaterElement.cs and ReverseStack.cs

[mohit-gogitter]

Description

I have created stack-based utility classes in C# that can be used by other developers in their solutions.
This utility provides commonly used operations related to stacks, which can be beneficial for solving various problems such as expression evaluations, balanced parentheses, or maintaining a history of operations.

These classes can be used to perform below stack-related operations:
Next Greater Element: Given an array, find the next greater element for each element in the array.
Balanced Parentheses Checker: A utility to check whether a given expression has balanced parentheses.
Reverse a Stack: Function to reverse a stack.

CheckList:

• 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

[siriak]

Please put separate algorithms in separate classes with descriptive names and check if they are already implemented in the repository

[mohit-gogitter]

@siriak As suggested, i have created separate classes for algorithms and removed redundant code

[siriak]

Please move them to algorithms project because they are not data structures, they only use stack data structure, add tests, and fix Codacy and other build checks

[mohit-gogitter]

@siriak Moved to Algorithms project, Added Tests, fixed codacy and build issues. Kindly review

[codecov]

Codecov Report

Attention: Patch coverage is 98.76543% with 1 line in your changes missing coverage. Please review.

Project coverage is 95.04%. Comparing base (cf19352) to head (a6732f9).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
Algorithms/Stack/BalancedParenthesesChecker.cs	97.72%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #473      +/-   ##
==========================================
+ Coverage   94.97%   95.04%   +0.06%     
==========================================
  Files         243      246       +3     
  Lines       10286    10367      +81     
  Branches     1464     1478      +14     
==========================================
+ Hits         9769     9853      +84     
+ Misses        398      395       -3     
  Partials      119      119              

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[siriak]

Looks good, thanks!