cmake: Fix CMake package export templates for CMake 3.24

CMake 3.24 implemented changes that break dependency discovery of the
exported libraries built by OBS.

deps/w32-pthreads/cmake/w32-pthreadsConfig.cmake.in

@@ -2,5 +2,3 @@
 
 include("${CMAKE_CURRENT_LIST_DIR}/@[email protected]")
 check_required_components("@PROJECT_NAME@")
-
-set(LIBOBS_LIBRARIES w32-pthreads)

libobs/cmake/libobsConfig.cmake.in

@@ -1,13 +1,14 @@
 @PACKAGE_INIT@
 
-include("${CMAKE_CURRENT_LIST_DIR}/@[email protected]")
-check_required_components("@PROJECT_NAME@")
+include(CMakeFindDependencyMacro)
 
 if(MSVC)
-  find_package(w32-pthreads REQUIRED)
+  find_dependency(w32-pthreads REQUIRED)
 endif()
+find_dependency(Threads REQUIRED)
 
-find_package(Threads REQUIRED)
+include("${CMAKE_CURRENT_LIST_DIR}/@[email protected]")
+check_required_components("@PROJECT_NAME@")
 
 set(LIBOBS_PLUGIN_DESTINATION "@PACKAGE_OBS_PLUGIN_DESTINATION@")
 set(LIBOBS_PLUGIN_DATA_DESTINATION "@PACKAGE_OBS_DATA_DESTINATION@/obs-plugins")