Use the Path type in the File module

[harendra-kumar]

• Copy File module to FileIO, remove the deprecated functions from FileIO.
• Change FilePath to Path in FileIO.
• Deprecate the old File module

[harendra-kumar]

For openFile we can open an fd directly using the system call and use fdToHandle to convert it to Handle. We do a similar thing in the Linux fsevent module.

[adithyaov]

The CoreUtils example needs this issue to be resolved.