add new c pattern

[karanghuge01]

fix : #357

Description
This pull request introduces a new C pattern: Hollow Square Star Pattern. The pattern demonstrates how to print a hollow square shape made of asterisks (*) based on the specified number of rows.

Time Complexity: O(n^2) - There are nested loops for rows and columns.
Space Complexity: O(1) - The program uses a constant amount of space.

Checklist

• I have tested the code and ensured it works as expected.
• I have updated the documentation (if applicable).
• I have followed the project's coding style.

[panditakshay402]

@karanghuge01 Kindly follow all the rules from Readme.md to get PR accepted

[karanghuge01]

I have carefully gone through the README.md file and followed the instructions to the best of my understanding. Since I am a beginner, I wanted to ask if there is anything I might have missed or overlooked in my pull request. I would appreciate your guidance on what needs to be done so I can ensure my PR is ready to be merged.

[panditakshay402]

I have carefully gone through the README.md file and followed the instructions to the best of my understanding. Since I am a beginner, I wanted to ask if there is anything I might have missed or overlooked in my pull request. I would appreciate your guidance on what needs to be done so I can ensure my PR is ready to be merged.

@karanghuge01 Yes Sure!!

there is some checklist (WorkFlow) created in this repo to check Rules:
1.Follow the user and star the repo.
2. Contributions must be meaningfulls. (dont just add sorting,searching, etc code).
3. commit must be greater that 50 lines.