Release of NetImgui v1.7.4

Note: Please use release v1.7.5.
(Contains a memory leak fix on the NetImguiServer application)

Description
A few bug fixes, to resolve some out of sync issue when compression active.

Version 1.7.4

(2022/01/30)

• API Changes
  • Removed the bWait parameter from Shutdown()
    • Always wait for Shutdown completion before returning now
    • This prevents multithread data release issues
  • Added a NETIMGUI_API define prefix to functions exported in NetImgui_Api.h
    • Similar to IMGUI_API, allows library user to control dll import/export
    • Takes the same value as IMGUI_API by default
• Bug fixes
  • Compression feature causing some out of sync issue with NetImgui Server
  • 32bits index support crash