Explicitly load xdp_core library before all XDP Plugins on Client

[IshitaGhosh]

Problem solved by the commit

All XDP Plugins like ML Timeline, AIE Profile/Debug/Trace depend on xdp_core library. On Windows Client flow, xrt/xdp dlls are not present in the Windows DLL search directories anymore. So, xdp_core is not found while loading the plugins. So, explicitly load xdp_core library before any XDP plugins.

Bug / issue (if any) fixed, which PR introduced the bug, how it was discovered

CR-1199377

How problem was solved, alternative solutions (if any) and why they were rejected

Risks (if any) associated the changes in the commit

What has been tested and how, request additional testing if necessary

Unit tests with multiple XDP Plugins enabled on Client.

Documentation impact (if any)