feat(deepinfra): add new models [bot]

[harshiv-26]

Auto-generated by model-addition-agent for provider deepinfra.

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Note

Low Risk
Low risk: adds three new deepinfra model metadata YAMLs (pricing/limits/capabilities) without changing runtime logic.

Overview
Adds three new deepinfra provider model definition files for ByteDance/Seed-2.0-code, Qwen/Qwen3.6-27B (marked thinking: true), and nvidia/Nemotron-3-Nano-Omni-30B-A3B-Reasoning.

Each config includes token pricing, large context/token limits (~256k), and image input modality support; Seed-2.0-code also declares prompt_caching with a cache read token cost.

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