Workbench: StudioLight HDRI's

The Studio lights are now loaded from disk. The location is
`datafiles/studiolights` they need to be JPG for now. JPG cannot store
HDRI color range but they are clamped inside the Workbench
engine for speed reason. I didn't select JP2K as it might not be
enabled.

Users can add upto 20 HDRI files. This limitation is inside the
RNA_space.c Currently the icons are calculated when you first open the
selection box for the HDRI's. We could add them to a background
rendering later.

I added 2 test files a sky texture rendered in Cycles and an HDRI from
cloud.blender.org.

source/creator/CMakeLists.txt

@@ -413,6 +413,7 @@ install(
 	DESTINATION ${TARGETDIR_VER}/datafiles
 )
 
+
 # helpful tip when using make
 if("${CMAKE_GENERATOR}" MATCHES ".*Makefiles.*")
 	# message after building.
@@ -979,6 +980,13 @@ unset(_icon_names)
 unset(_icon_files)
 unset(_f)
 
+# -----------------------------------------------------------------------------
+# Studio Lights
+install(
+	DIRECTORY
+		${CMAKE_SOURCE_DIR}/release/datafiles/studiolights
+	DESTINATION ${TARGETDIR_VER}/datafiles
+)
 
 # -----------------------------------------------------------------------------
 # Setup link libs