Add Hilla module as a dependency to Platform

[mshabarov]

Describe your motivation

Make com.vaadin:vaadin (or vaadin-core or vaadin-spring-boot-starter, to be discussed and researched) depend on the com.vaadin.hilla:hilla artifact, which includes the endpoint and engine-runtime, so if the hilla isn’t desired, one can exclude the whole hilla dependency.

Additional context

Vaadin/Hilla 24.4

[knoobie]

Thanks for not adding it to vaadin-core :)

Edit: Damn :D

[mshabarov]

Well, just changed it to vaadin-core :)
But indeed I'm not sure 100% what would be the best place for it.
Let me highlight it in the ticket.

[knoobie]

5 seconds thought: Hilla requires Spring, therefore it should be in the spring starter as dependency? Vaadin and Vaadin Core does not require Spring

[mshabarov]

We cannot really add hilla to vaadin-core until we split react-components into core and all, as requested #4936.