Btree data structure

[ethanhaines]

Hello again! I had some free time over the past few days and decided to add B-tree implementation, which I am familiar with but I wanted to get more practice with it. I made sure to add comprehensive tests that cover each method I added and ensured they all passed. I also made sure that the project built and ran without issue. Once again, let me know if there are any issues with my code, and I will work on it as soon as I can. Thank you for your time!

• 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

❌ Patch coverage is 99.28401% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 96.81%. Comparing base (9d8d6d6) to head (f8217b2).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
DataStructures/BTree/BTree.cs	99.24%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #551      +/-   ##
==========================================
+ Coverage   96.72%   96.81%   +0.09%     
==========================================
  Files         282      284       +2     
  Lines       11174    11593     +419     
  Branches     1601     1668      +67     
==========================================
+ Hits        10808    11224     +416     
- Misses        232      234       +2     
- Partials      134      135       +1     

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[ethanhaines]

I read the Codecov report and updated my tests to add coverage for the missing lines.

[siriak]

Looks good, thanks!