Create "common server options" type to align all runtimes #25538

@janpeer commented

I wonder if it would make sense if it would make sense to have a "common server options" type that grows overall to align all runtimes. Then we could potentially add a rule in BUGBOT.md to check if we have a new option set that it is synced across runtimes properly.

(just a general thing, not a blocker or action item for this PR)

Do this as part of applying the same "consistent exports/options" treatment to Bun as Deno received in #25495 and #25492