Allow processors to be set as part of track publish options

[lukasIO]

this allows users to specify processors that should be applied to tracks during publishing.
This helps to solve use cases where users would like to start the initial publication with processors enabled already.

      videoCaptureDefaults: {
        resolution: VideoPresets.h720.resolution,
        processor: BackgroundBlur(),
      },
      audioCaptureDefaults: {
        processor: KrispNoiseFilter(),
      },

[changeset-bot]

🦋 Changeset detected

Latest commit: 840b3dc

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

This PR includes changesets to release 1 package

Name	Type
livekit-client	Minor

Not sure what this means? Click here to learn what changesets are.

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

[github-actions]

size-limit report 📦

Path	Size
dist/livekit-client.esm.mjs	79.97 KB (+0.05% 🔺)
dist/livekit-client.umd.js	85.71 KB (+0.11% 🔺)

[davidzhao]

lgtm