Optimise file move

[sahinfalcon]

This fixes #467, now when moving files within the same partition, os.Rename is used to update inode pointers instead of copying data. This significantly improves performance for large files and maintains atomic operations where possible.

[netlify]

✅ Deploy Preview for superfile canceled.

Name	Link
🔨 Latest commit	6f1be2f
🔍 Latest deploy log	https://app.netlify.com/sites/superfile/deploys/676560faa1617a0008e0b1df

[yorukot]

Thanks a lot for your contribution!

[sahinfalcon]

Happy to contribute 😄

[booth-w]

Oh wow. Thank you. This was the only thing missing that stopped me from fully switching to this as my file manager.

[yorukot]

The changes in this PR cause build failures on Windows Issue #534. To address this problem, I've implemented a cross-platform solution to ensure compatibility. Below is the updated function:

// isSamePartition checks if two paths are on the same filesystem partition
func isSamePartition(path1, path2 string) (bool, error) {
	// Get the absolute path to handle relative paths
	absPath1, err := filepath.Abs(path1)
	if err != nil {
		return false, fmt.Errorf("failed to get absolute path of the first path: %v", err)
	}

	absPath2, err := filepath.Abs(path2)
	if err != nil {
		return false, fmt.Errorf("failed to get absolute path of the second path: %v", err)
	}

	if runtime.GOOS == "windows" {
		// On Windows, we can check if both paths are on the same drive (same letter)
		drive1 := getDriveLetter(absPath1)
		drive2 := getDriveLetter(absPath2)
		return drive1 == drive2, nil
	}

	// For Unix-like systems, we use the same path to check the root partition
	return filepath.VolumeName(absPath1) == filepath.VolumeName(absPath2), nil
}

// getDriveLetter extracts the drive letter from a Windows path
func getDriveLetter(path string) string {
	// Windows paths are usually like "C:\path\to\file"
	// So we need to extract the drive letter (e.g., "C")
	return strings.ToUpper(string(path[0]))
}

If you have further suggestions or need clarification, feel free to let me know! Looking forward to your feedback!