Avoid global targets in thirdparty dependencies (#17755)

* Added dependencies via vcpkg

* Try to remove global imported targets

* Fix for conan

* Fixed RHEL case

* Fixed RHEL, U18 cases

* Returned OpenCV finding

* Update cmake/templates/OpenVINOConfig.cmake.in

Fixed IMPORTED_GLOBAL => GLOBAL in OpenVINOConfig.cmake.in template file

* Apply suggestions from code review

Properply used NAMES in find_package

* Fixed case with zlib

* Final fixes

* Fixes

* Removed CONFIG from find package ZLIB

* Fixed RHEL

* Reverted changes with gflags back

* Turn off LTO after thirdparty dependencies are built

docs/dev/static_libaries.md

@@ -19,7 +19,7 @@ It is possible because not all interface symbols of OpenVINO Runtime libraries a
 
 ## System requirements
 
-* CMake version 3.17 or higher must be used to build static OpenVINO libraries.
+* CMake version 3.18 or higher must be used to build static OpenVINO libraries.
 * Supported OSes:
     * Windows x64
     * Linux x64