Terrain Physics Heightfield support

* New Heightfield Components

Signed-off-by: John Jones-Steele <jjjoness@amazon.com>

* Misc PR fixes
* Fixed linux build failure from bad #include
* Renamed "Terrain Physics Collider" to "Terrain Physics Heightfield Collider" per physics team feedback
* Fixed 1/5 -> 1/4 typo in a comment
* Added missing member copies in HeightfieldShapeConfiguration

Signed-off-by: Mike Balfour <82224783+mbalfour-amzn@users.noreply.github.com>

* Addressed PR feedback

Signed-off-by: Mike Balfour <82224783+mbalfour-amzn@users.noreply.github.com>

* Changes from review

Signed-off-by: John Jones-Steele <jjjoness@amazon.com>

* Remove tabs accidently added

Signed-off-by: John Jones-Steele <jjjoness@amazon.com>

* Fixed overly complicated scaling math.

Signed-off-by: Mike Balfour <82224783+mbalfour-amzn@users.noreply.github.com>

* Added comments to make it more obvious what's happening on CreateEnd / DestroyBegin.

Signed-off-by: Mike Balfour <82224783+mbalfour-amzn@users.noreply.github.com>

* Moved Heightfield CreatePxGeometryFromConfig into its own function

Signed-off-by: John Jones-Steele <jjjoness@amazon.com>

Co-authored-by: Mike Balfour <82224783+mbalfour-amzn@users.noreply.github.com>

Code/Framework/AzFramework/CMakeLists.txt

@@ -42,6 +42,7 @@ if(PAL_TRAIT_BUILD_TESTS_SUPPORTED)
         NAMESPACE AZ
         FILES_CMAKE
             Tests/framework_shared_tests_files.cmake
+            AzFramework/Physics/physics_mock_files.cmake
         INCLUDE_DIRECTORIES
             PUBLIC
                 Tests
@@ -53,7 +54,7 @@ if(PAL_TRAIT_BUILD_TESTS_SUPPORTED)
                 AZ::AzTest
                 AZ::AzTestShared
     )
-
+    
     if(PAL_TRAIT_BUILD_HOST_TOOLS)
 
         ly_add_target(