feat: initial model catalog with 196 models across 39 providers

Community-maintained TOML catalog for LibreFang. New models can be added
via PR without requiring a LibreFang binary release.

Includes validation script, bilingual docs, and GitHub templates.

providers/chutes.toml

@@ -0,0 +1,74 @@
+# Chutes.ai — https://chutes.ai
+# Models: 5
+
+[provider]
+id = "chutes"
+display_name = "Chutes.ai"
+api_key_env = "CHUTES_API_KEY"
+base_url = "https://llm.chutes.ai/v1"
+key_required = true
+
+[[models]]
+id = "chutes/deepseek-ai/DeepSeek-V3"
+display_name = "DeepSeek V3 (Chutes)"
+tier = "smart"
+context_window = 128000
+max_output_tokens = 8192
+input_cost_per_m = 0.25
+output_cost_per_m = 0.35
+supports_tools = true
+supports_vision = false
+supports_streaming = true
+aliases = ["chutes-deepseek-v3"]
+
+[[models]]
+id = "chutes/deepseek-ai/DeepSeek-R1"
+display_name = "DeepSeek R1 (Chutes)"
+tier = "smart"
+context_window = 128000
+max_output_tokens = 8192
+input_cost_per_m = 0.55
+output_cost_per_m = 2.19
+supports_tools = false
+supports_vision = false
+supports_streaming = true
+aliases = ["chutes-deepseek-r1"]
+
+[[models]]
+id = "chutes/meta-llama/Llama-4-Maverick-17B-128E-Instruct"
+display_name = "Llama 4 Maverick (Chutes)"
+tier = "balanced"
+context_window = 128000
+max_output_tokens = 8192
+input_cost_per_m = 0.20
+output_cost_per_m = 0.30
+supports_tools = true
+supports_vision = false
+supports_streaming = true
+aliases = ["chutes-llama-maverick"]
+
+[[models]]
+id = "chutes/Qwen/Qwen3-235B-A22B"
+display_name = "Qwen3 235B (Chutes)"
+tier = "smart"
+context_window = 128000
+max_output_tokens = 8192
+input_cost_per_m = 0.25
+output_cost_per_m = 0.35
+supports_tools = true
+supports_vision = false
+supports_streaming = true
+aliases = ["chutes-qwen3"]
+
+[[models]]
+id = "chutes/meta-llama/Llama-3.3-70B-Instruct"
+display_name = "Llama 3.3 70B (Chutes)"
+tier = "balanced"
+context_window = 128000
+max_output_tokens = 8192
+input_cost_per_m = 0.10
+output_cost_per_m = 0.15
+supports_tools = true
+supports_vision = false
+supports_streaming = true
+aliases = ["chutes-llama-70b"]