Storybook 8 support

[literalpie]

I fixed most of the breaking changes, but getQueryParams is no longer available where we need it (it's available in the manager-api, but not preview-api). A good fix would require more work.

If there's demand, maybe we could let this package continue to limp along by just accepting that query param support will be incomplete.

dependencies also aren't right. We'd need to clean that up before releasing if we want to release.

[ArmorDarks]

While it's not merged yet, here is a fork with a pre-built dist.

For those who need it, just temporarily update package version to this:

"@storybook/addon-knobs": "github:ArmorDarks/addon-knobs#storybook-8",

[shilman]

Can you please change the dependencies to ^8 instead of directly depending on the RC?

[literalpie]

I actually can't figure out what breaks by removing knobValuesFromUrl. Everything seems to work the same as before:

• Using the "copy" button to copy a URL and navigate to it applies the knob just like v7
• Switching to a different story and back resets knob values, which is the same behavior as v7

I think it's worth releasing even if there is an issue. We can open a new issue to follow-up with a fix if someone does discover something broken by this.

Otherwise, I think this is in a good state to merge now.