Add File Storage Documentation to README

[banasmita24]

Description:

Enhance the README to include a section that details the structure and purpose of files and folders within the project. This documentation will help new contributors and maintainers understand where to find specific files and their functions.

Requirements:

• List key folders and files.
• Include any subdirectory structures if relevant, and explain the organization.
• README includes a "File Structure" or "Project Structure" section.
• New contributors can understand the purpose of each file/folder from the documentation.

[github-actions]

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