COMP: Update iMSTKConfig to find glfw and gli if Vulkan support is enabled

Suggested-by: Alexis Girault <alexis.girault@kitware.com>

iMSTKConfig.cmake.in

@@ -10,6 +10,7 @@ list(INSERT CMAKE_MODULE_PATH 0 "${iMSTK_SOURCE_DIR}/CMake")
 
 # iMSTK settings
 set(iMSTK_USE_OMNI @iMSTK_USE_OMNI@)
+set(iMSTK_USE_Vulkan @iMSTK_USE_Vulkan@)
 set(VegaFEM_DIR @VegaFEM_DIR@)
 set(VTK_DIR @VTK_DIR@)
 
@@ -23,6 +24,14 @@ include_directories( ${g3log_INCLUDE_DIR} )
 # glm
 find_package( glm REQUIRED )
 
+if(iMSTK_USE_Vulkan)
+  # glfw
+  find_package( glfw REQUIRED )
+
+  # gli
+  find_package( gli REQUIRED )
+endif()
+
 # Eigen
 find_package( Eigen 3.1.2 REQUIRED )
 include_directories( ${Eigen_INCLUDE_DIR} )