Deprecate Domain unit creator methods

[kireevmp]

As discussed in #590, methods on Domain are hard to work with within plugins (both Babel and SWC).

Proposal

Deprecate the following legacy Unit creators on Domain:

• .event and .createEvent
• .effect and .createEffect
• .store and .createStore
• .domain and .createDomain

There has been an alternative way to attach the domain to a unit via argument since Encke 22.4.0 (released Nov 5, 2022), so there's been enough time to adopt it.

Additionally, Domain methods provide worse DX by default and are inconsistent with the rest of Effector API.

[zerobias]

Yes, it’s a good idea, we’ll go in that direction, maybe we could deprecate them altogether.

Next major version should be relatively small, without large depreciations, so it’s planned for the effector 25