Replace extensions rule with more general export rule. Extensions must be public.

[ben-polinsky]

• Remove legacy @preview tag - it is meaningless. Was intended to convey beta status for extensions. Now, extensions must have a @public tag.
• Lint non-extension exported apis to ensure they include one and only one release tag. Lint rule renamed.
• Some refactoring and cleanup

Issue in core repo: iTwin/itwinjs-core#6573

[ben-polinsky]

@anmolshres98 @aruniverse we're good to go here, if you want to review.

[anmolshres98]

looks good except a couple clarification comments

[aruniverse]

lgtm, just add a beachball change so you can publish a new pre-release

[ben-polinsky]

lgtm, just add a beachball change so you can publish a new pre-release

Have a change. I did set it to major, figured we could finally release 4.0.0.

[aruniverse]

lgtm, just add a beachball change so you can publish a new pre-release

Have a change. I did set it to major, figured we could finally release 4.0.0.

my bad; missed that. sounds good.

[paulius-valiunas]

lgtm, just add a beachball change so you can publish a new pre-release

Have a change. I did set it to major, figured we could finally release 4.0.0.

my bad; missed that. sounds good.

It didn't even take a year 🎉 (but hurry up, you only have a month left 😁)

Jokes aside, perhaps it would be a good time to remove style rules and switch to prettier? On the other hand, I wouldn't really mind another major bump in a month or so.

[ben-polinsky]

lgtm, just add a beachball change so you can publish a new pre-release

Have a change. I did set it to major, figured we could finally release 4.0.0.

my bad; missed that. sounds good.

It didn't even take a year 🎉 (but hurry up, you only have a month left 😁)

Jokes aside, perhaps it would be a good time to remove style rules and switch to prettier? On the other hand, I wouldn't really mind another major bump in a month or so.

I agree - let's get crazy and release another major soon.

[paulius-valiunas]

Well, I don't want to hold up this release because it's long overdue... but then I also don't want to wait another year just because for some reason we want to keep an arbitrary interval between major versions. These are lint rules, it's not like we have to frequently patch vulnerabilities in previous major versions. We can release them as often as we want and let people update at their own pace.