chore: add a small test to this repo

[ItsSudip]

Fixes # (issue)
We are introducing the feature to upload the code coverage to Codecov.
Resolves INT-1218

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added unit tests for the code
• I have made corresponding changes to the documentation

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (8e42546) 0.00% compared to head (97ce8fd) 2.52%.

Files	Patch %	Lines
bingads/client.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           main      #7      +/-   ##
=======================================
+ Coverage      0   2.52%   +2.52%     
=======================================
  Files         0       3       +3     
  Lines         0     198     +198     
=======================================
+ Hits          0       5       +5     
- Misses        0     193     +193     

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