Update to how entity space is treated in the viewport (#4263)

* first pass fixes for how entity space is handled in the viewport interaction model

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* small updates to simplify space handling

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* fix for influence group with one entity selected

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* some tidy-up and fix for scale manipulator snapping

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* couple of small fixes for scale manipulator

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* small comment update

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* fixes for integration test failures

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* add test for rotation manipulator

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* add test coverage for rotation manipulators

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* add tests for translation manipulators and some other tidy-up changes

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* add tests for translating a group of entities

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* add some tests for scale manipulators

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* some updates and formatting changes (clang-format) to ViewportScreen

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* simplify usage of lround code

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* update missed name updates

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* update usage of WorldToScreenNdc

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* updates following review feedback

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* some more small tidy-up changes

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* move static variables to be marked inline

Signed-off-by: hultonha <hultonha@amazon.co.uk>

* small formatting fixes

Signed-off-by: hultonha <hultonha@amazon.co.uk>

Gems/AtomLyIntegration/AtomFont/Code/Source/FFont.cpp

@@ -1726,7 +1726,7 @@ void AZ::FFont::DrawScreenAlignedText3d(
     {
         return;
     }
-    AZ::Vector3 positionNDC = AzFramework::WorldToScreenNDC(
+    AZ::Vector3 positionNDC = AzFramework::WorldToScreenNdc(
         params.m_position,
         currentView->GetWorldToViewMatrix(),
         currentView->GetViewToClipMatrix()