feat(weave): Add support for op kinds and colors

[andrewtruong]

Adds the kind parameter to ops to support better organization of traces

Pair with: https://github.com/wandb/core/pull/37460

Introducing the New Op.Kind Indicator for Enhanced Trace Tree Organization - Watch Video

[codecov]

Codecov Report

❌ Patch coverage is 33.33333% with 20 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
weave/trace/op.py	23.07%	12 Missing and 8 partials ⚠️

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[wandbot-3000]

Preview this PR with FeatureBee: https://beta.wandb.ai/?betaVersion=c9368ff64a477947ad130c86973d42857aef6406

[github-actions]

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