ExpandTilde expands the tilde symbol (~) to the user's home directory This function is also useful for expanding file paths like "~/a/b/c".

FileExists checks if the file with the gieven name exists.

ReadFile reads a file with the given file name and returns its content as a slice of bytes.

ReadFileAsStr does the same thing as ReadFile but ruturns the content of the file as a string.

UserHomeDir returns the user's home directory.