[venice] Add Kimi K2.6 model configuration

- Add new model definition for Venice provider
- Include cost, limits, and modality specs
- Enable reasoning, tool calling, and image input

Author: dpuyosa

providers/venice/models/kimi-k2-6.toml

@@ -0,0 +1,26 @@
+name = "Kimi K2.6"
+family = "kimi"
+attachment = true
+reasoning = true
+tool_call = true
+structured_output = true
+temperature = true
+release_date = "2026-04-20"
+last_updated = "2026-04-20"
+open_weights = true
+
+[interleaved]
+field = "reasoning_content"
+
+[cost]
+input = 0.56
+output = 3.5
+cache_read = 0.11
+
+[limit]
+context = 256_000
+output = 65_536
+
+[modalities]
+input = ["text", "image"]
+output = ["text"]