feat: add zoom chat logo

[shashwatsnghcomposio]

What changed

• Added src/assets/zoom_chat.svg for Mercury's canonical zoom_chat toolkit slug.

Why

• Mercury PR #25141 adds the Zoom Chat / Team Chat toolkit, but logo-cdn had no zoom_chat.svg, so the canonical loader path would fall back to the generic asset.
• Reused the existing official Zoom mark already present in src/assets/zoom.svg; no geometry, color, or raster transformation was introduced.

Source

• Official product: https://zoom.us/
• Official brand-use guidance: https://zoom.us/brandguidelines
• Existing upstream source asset reused byte-for-byte: https://github.com/ComposioHQ/logo-cdn/blob/master/src/assets/zoom.svg
• Mercury PR: https://github.com/ComposioHQ/mercury/pull/25141

Validation

• Validated with validate_logo.py.
• Rendered and inspected at 32px, 48px, and 128px on light and dark backgrounds; the 128px preview was rendered from the exact copied asset.
• One-file diff only: src/assets/zoom_chat.svg.
• Base is ComposioHQ/logo-cdn:master; head is shashwatsnghcomposio/logo-cdn:fix/zoom-chat-logo-20260811.

Limitation

• Zoom Chat uses the Zoom product mark because it is a Zoom product surface and no separate official Zoom Chat mark was published in the verified brand source.

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