Expand embedded_io::ErrorKind to better match std::io::ErrorKind.

[jacobguenther]

embedded_io::ErrorKind only has 18 variants while std::io::ErrorKind has 41. I am porting a zip library to no_std and would like to use more of the variants. Some of these variants would also be useful for filesystems on sdcards.
These are some of the errors I need to use.
NotADirectory,
IsADirectory,
DirectoryNotEmpty,
ReadOnlyFilesystem,
StorageFull,
NotSeekable,
QuotaExceeded,
FileTooLarge,
CrossesDevices,
InvalidFilename,
UnexpectedEof,

I don't see why not implementing all of them though?