Added tests for find_duplicates

[Sai-ganesh-0004]

Description

This update introduces unit tests for the find_duplicates function in the twinTrim.flagController module. The tests cover various scenarios, including finding duplicate files, handling directories with no files, and proper filtering of files. These tests ensure the robustness of the duplicate detection functionality by validating its behavior in different contexts.

• Fixes Write Unit Tests for find_duplicates Function #22

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Tests 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
• My changes generate no new warnings
• New and existing unit tests pass locally with my changes
• I have maintained a clean commit history by using the necessary Git commands
• I have checked that my code does not cause any merge conflicts

Screenshots (if applicable)

[Sai-ganesh-0004]

@techy4shri
can you add labels for this pr

[Sai-ganesh-0004]

Want me to add anything else I will add

[Kota-Karthik]

@Sai-ganesh-0004
I see no problems with the code , but let @techy4shri submit her review
will merge it ,if she doesn't request any changes!

[Sai-ganesh-0004]

@techy4shri Please review

[techy4shri]

Everything is working fantastic, I approve @Kota-Karthik !
@Sai-ganesh-0004 good work.

[Sai-ganesh-0004]

@techy4shri can you add gssoc-ext label for this pr