remove the optimized GPU test file and replace the existing GPU test file with the optimized tests, update atom_constants.py for the new Light component properties, add area light test script, still need to add spot light test script to fully finish this task

Signed-off-by: jromnoa <80134229+jromnoa@users.noreply.github.com>

AutomatedTesting/Gem/PythonTests/Atom/tests/hydra_AtomGPU_BasicLevelSetup.py

@@ -80,6 +80,7 @@ def AtomGPU_BasicLevelSetup_SetsUpLevel():
     Test setup:
     - Wait for Editor idle loop.
     - Open the "Base" level.
+    - Deletes all existing entities before creating the scene.
 
     Expected Behavior:
     The scene can be setup for a basic level.
@@ -115,7 +116,6 @@ def AtomGPU_BasicLevelSetup_SetsUpLevel():
     """
 
     import os
-    from math import isclose
 
     import azlmbr.legacy.general as general
     import azlmbr.math as math
@@ -126,21 +126,11 @@ def AtomGPU_BasicLevelSetup_SetsUpLevel():
     from editor_python_test_tools.utils import Report, Tracer, TestHelper
 
     from Atom.atom_utils.atom_constants import AtomComponentProperties
+    from Atom.atom_utils.atom_component_helper import initial_viewport_setup
     from Atom.atom_utils.screenshot_utils import ScreenshotHelper
 
-    SCREENSHOT_NAME = "AtomBasicLevelSetup"
-    SCREEN_WIDTH = 1280
-    SCREEN_HEIGHT = 720
     DEGREE_RADIAN_FACTOR = 0.0174533
-
-    def initial_viewport_setup(screen_width, screen_height):
-        general.set_viewport_size(screen_width, screen_height)
-        general.update_viewport()
-        TestHelper.wait_for_condition(
-            function=lambda: isclose(a=general.get_viewport_size().x, b=SCREEN_WIDTH, rel_tol=0.1)
-                        and isclose(a=general.get_viewport_size().y, b=SCREEN_HEIGHT, rel_tol=0.1),
-            timeout_in_seconds=4.0
-        )
+    SCREENSHOT_NAME = "AtomBasicLevelSetup"
 
     with Tracer() as error_tracer:
         # Test setup begins.
@@ -148,11 +138,16 @@ def AtomGPU_BasicLevelSetup_SetsUpLevel():
         TestHelper.init_idle()
         TestHelper.open_level("", "Base")
 
+        # Setup: Deletes all existing entities before creating the scene.
+        search_filter = azlmbr.entity.SearchFilter()
+        all_entities = azlmbr.entity.SearchBus(azlmbr.bus.Broadcast, "SearchEntities", search_filter)
+        azlmbr.editor.ToolsApplicationRequestBus(azlmbr.bus.Broadcast, "DeleteEntities", all_entities)
+
         # Test steps begin.
         # 1. Close error windows and display helpers then update the viewport size.
         TestHelper.close_error_windows()
         TestHelper.close_display_helpers()
-        initial_viewport_setup(SCREEN_WIDTH, SCREEN_HEIGHT)
+        initial_viewport_setup()
         general.update_viewport()
 
         # 2. Create Default Level Entity.