A container for 2 component types.
specs : (Ecs.Internal.AllComponentsSpec comparable (Components2 comparable a1 a2) -> Ecs.Internal.ComponentSpec comparable a1 (Components2 comparable a1 a2) -> Ecs.Internal.ComponentSpec comparable a2 (Components2 comparable a1 a2) -> specs) -> specs
Create all component specifications for 2 component types.