feat: support oRPC v2 contracts (#4195)

* feat: support oRPC v2 contracts

* test: update orpc v2 snapshots

* fix: address oRPC v2 review feedback

* docs: split oRPC docs by version

* docs: fix oRPC query styles highlight

* fix: clarify oRPC query style support

* test: add oRPC plugin behavior coverage

* test: expand oRPC query style coverage

* fix: address oRPC query style feedback

* docs: update changeset

* chore: clean up

* docs: update docs

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Co-authored-by: Lubos <lubos@heyapi.dev>