Introduce imosid force option for overwriting files

[sweep-ai]

Description

This PR introduces a new force option in the imosid command-line tool. The force option allows the tool to overwrite files without checking if they have modified or invalid sections. This can be useful in certain scenarios where the user wants to forcefully update the files.

Summary of Changes

• Modified the command-line argument parsing code in src/app.rs to add a new command-line argument for the force option in the apply subcommand.
• Modified the DotFile::applyfile function in src/files.rs to accept an additional boolean parameter indicating whether the force option is enabled.
• Added a condition in the DotFile::applyfile function to skip the checks for modifications and invalid sections if the force option is enabled.
• Added a condition in the DotFile::write_to_file function to skip the checks for modifications and invalid sections if the force option is enabled.

Fixes #3.

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