Add function to detect long paths for files on Windows

[chxmberland]

Linked issues

N/A

Summarize your change.

Added a function that takes advantage of the features added in Windows 10, version 1607 and later (see this documentation).

Describe the reason for the change.

A user has requested that OpenRV/RV supports long file paths on Windows (longer than 260 characters).

Describe what you have tested and on which operating system.

Tested opening .mov files with paths longer than 260 characters on...

• Windows 11
• macOS Sonoma 14.5 (already worked, still works with these changes)

[bernie-laberge]

Great catch ! Thanks !