Add methods to handle hard links and symbolic links

[ghost]

Luckily everything seems to be available on C++'s File System library:

https://en.cppreference.com/w/cpp/filesystem

[objeck]

Ok, I will look into it.

Objeck uses the C++ 17 library when it works. The implementation is flaky at times. When it is, we use the native POSIX and Win32 equivalents.

[objeck]

Please, refer to the following sitewards/modman-php#48. A design goal is not to implement OS-specific functionality. Thoughts?

[ghost]

Please, refer to the following sitewards/modman-php#48.

Please read that issue again. The key is it needs to be run as Administrator to work. This is not a new knowledge to me. Do you have 7zip on your computer? Open 7zip and play with it File -> Link... and you will quickly realize you need to run it as Administrator in order for this feature to work.

A design goal is not to implement OS-specific functionality. Thoughts?

https://docs.oracle.com/javase/tutorial/essential/io/links.html

[objeck]

Added in last commit

[ghost]

@objeck I have not yet tested the newly added methods. It seems I can't keep track of your commits. Btw, from the API doc, it seems you only added support for SymbolicLink but not HardLink, and the SymbolicLink class doesn't have methods to UnLink (safety delete the link without damaging the original file). I have created new issues for this: #253 #254