Add `priority.run` config option

[jpwilliams]

Summary

Adds priority.run config option for inngest/inngest#709.

Checklist

• [x] Assess best naming and discoverability
• [x] Added a docs PR that references this PR
• [x] Added unit/integration tests
• [x] Added changesets if applicable

Related

• inngest/inngest#709

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 0a171ff55eef99e8c25b1f899ae71bf9b82f75c8

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

| Name | Type | | ------- | ----- | | inngest | Minor |

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Click here if you're a maintainer who wants to add another changeset to this PR

[inngest-release-bot]

A user has added the prerelease/inngest label, so this PR will be published to npm with the tag pr-362. It will be updated with the latest changes as you push commits to this PR.

You can install this prerelease version with:

npm install inngest@pr-362

The last release was built and published from 0a171ff55eef99e8c25b1f899ae71bf9b82f75c8.