Created a seperate resource and variable file for Vue GUI

Changes includes:
    - Added a new resource and variable file for Vue GUI automation
    - Moved required keywords from gui/lib/resource.robot into new
      resource file
    - Moved required variables from gui/data/resource_variables.py
      into new variable file
    - Modified resource and variable file path in required files

Change-Id: Iedc1d59c31de21af2808678340fcead9672afd34
Signed-off-by: Rahul Maheshwari <rahulmaheshwari@in.ibm.com>
diff --git a/gui/gui_test/control_menu/test_manage_power_usage_sub_menu.robot b/gui/gui_test/control_menu/test_manage_power_usage_sub_menu.robot
index 4daab82..cfce02f 100644
--- a/gui/gui_test/control_menu/test_manage_power_usage_sub_menu.robot
+++ b/gui/gui_test/control_menu/test_manage_power_usage_sub_menu.robot
@@ -2,7 +2,7 @@
 
 Documentation  Test OpenBMC GUI "Manage power usage" sub-menu of "Server control".
 
-Resource        ../../lib/resource.robot
+Resource        ../../lib/gui_resource.robot
 
 Suite Setup     Launch Browser And Login GUI
 Suite Teardown  Close Browser