Remove `.vscode` and `.idea` Files from the Repository

[wwishd]

Description:
It has been noticed that configuration directories such as .vscode (for Visual Studio Code) and .idea (for JetBrains IDEs) are included in the repository. These user-specific files can lead to configuration conflicts across different development environments. To maintain a clean repository and avoid such issues, these files should be removed and added to .gitignore.

Tasks:

• Remove all instances of .vscode and .idea directories from the repository history.
• Add .vscode/ and .idea/ entries to the .gitignore file.
• Verify that the removal does not affect any necessary configuration files that are required for the build or development process.
• Update the contributing guidelines to remind contributors to avoid committing IDE-specific files in the future.