[CodeGenerator:] Cache static component index lookup into local var

Example:

// Before
public void AddPosition(IntVector2 newValue) {
    var component = CreateComponent<PositionComponent>(CoreComponentsLookup.Position);
    component.value = newValue;
    AddComponent(CoreComponentsLookup.Position, component);
}

// After
public void AddPosition(IntVector2 newValue) {
    var index = CoreComponentsLookup.Position;
    var component = CreateComponent<PositionComponent>(index);
    component.value = newValue;
    AddComponent(index, component);
}

[ghost]

Ooh. Yes I know that. I overlooked the second use of the lookup variable lol. faster by 1 statement. 👍

[bddckr]

The difference is that the new variable index is used twice. The compiler won’t reuse the same variable for that as it doesn’t know what CoreComponentsLookup.Position does. It could have side effects for example.