Revamp template capabilities + inject tools in system message when not supported by template

[ochafik]

This only affects the chat-template.hpp experimental header (used to incubate ggml-org/llama.cpp#9639), not core minja.hpp.

• Refreshed template capabilities detection code in C++ and Python, now kept in lockstep by tests (w/ some ground-truth expectations in new test-capabilities.cpp).
• More granular fallbacks: some models don't inject tools but do support tool calling, e.g. DeepSeek R1
• Fixes detection of parallel tool calls, etc
• Skip less tests from Python goldens (more work needed to align fallback mechanisms 1:1)
• More extensible API

All templates can be used the same way (e.g. as if they supported everything / didn't require any specific adjustments from the user of Minja)

  struct chat_template_caps {
      bool supports_tools = false;
      bool supports_tool_calls = false;
      bool supports_tool_responses = false;
      bool supports_system_role = false;
      bool supports_parallel_tool_calls = false;
      bool supports_tool_call_id = false;
      // meta-llama/Llama-3.1-8B-Instruct expects arguments to be an object.
      // Most other templates (and OpenAI's API) expect the arguments object to be stringified.
      bool requires_object_arguments = false;
      // CohereForAI/c4ai-command-r-plus simple variant
      bool requires_non_null_content = false;
      // MiniMaxAI/MiniMax-Text-01 special
      bool requires_typed_content = false;
  }

This makes it possible to use deepseek-ai/DeepSeek-R1-Distill-Llama-8B with tools without having to pass a different system message than with most other models.

Possible follow ups:

• allow controlling which capabilities are emulated (e.g. to disable tools inlining)
• pass a template to control how the tools are inlined, etc?

Model	requires object arguments	requires typed content	supports parallel tool calls	supports system role	supports tool call id	supports tool calls	supports tool responses	supports tools
mistralai-Mistral-Large-Instruct-2407	⚠️		✅	✅	✅	✅	✅	✅
mistralai-Mistral-Nemo-Instruct-2407	⚠️		✅	✅	✅	✅	✅	✅
NousResearch-Hermes-2-Pro-Mistral-7B-tool_use			✅	✅		✅	✅	✅
NousResearch-Hermes-2-Pro-Llama-3-8B-tool_use			✅	✅		✅	✅	✅
meetkai-functionary-medium-v3.2			✅	✅		✅	✅	✅
NousResearch-Hermes-3-Llama-3.1-70B-tool_use			✅	✅		✅	✅	✅
CohereForAI-c4ai-command-r-plus-tool_use	⚠️		✅	✅		✅	✅	✅
Qwen-QwQ-32B-Preview	⚠️		✅	✅		✅	✅	✅
Qwen-Qwen2.5-Math-7B-Instruct	⚠️		✅	✅		✅	✅	✅
Qwen-Qwen2.5-7B-Instruct	⚠️		✅	✅		✅	✅	✅
deepseek-ai-DeepSeek-R1-Distill-Qwen-7B			✅	✅		✅	✅
deepseek-ai-DeepSeek-R1-Distill-Qwen-32B			✅	✅		✅	✅
deepseek-ai-DeepSeek-R1-Distill-Llama-8B			✅	✅		✅	✅
deepseek-ai-DeepSeek-V2.5			✅	✅		✅	✅
meta-llama-Llama-3.2-3B-Instruct	⚠️			✅		✅	✅	✅
nvidia-Llama-3.1-Nemotron-70B-Instruct-HF	⚠️			✅		✅	✅	✅
meta-llama-Llama-3.3-70B-Instruct	⚠️			✅		✅	✅	✅
meta-llama-Meta-Llama-3.1-8B-Instruct	⚠️			✅		✅	✅	✅
meta-llama-Llama-3.1-8B-Instruct	⚠️			✅		✅	✅	✅
mistralai-Mistral-7B-Instruct-v0.2				✅
databricks-dbrx-instruct				✅
microsoft-Phi-3.5-vision-instruct				✅
openchat-openchat-3.5-0106				✅
bofenghuang-vigogne-2-70b-chat				✅
microsoft-Phi-3-small-8k-instruct				✅
mattshumer-Reflection-Llama-3.1-70B				✅
teknium-OpenHermes-2.5-Mistral-7B				✅
mistralai-Mixtral-8x7B-Instruct-v0.1				✅
NousResearch-Hermes-2-Pro-Mistral-7B-default				✅
Qwen-Qwen2-VL-7B-Instruct				✅
CohereForAI-c4ai-command-r-plus-rag				✅
mlabonne-AlphaMonarch-7B				✅
microsoft-Phi-3-mini-4k-instruct				✅
microsoft-Phi-3.5-mini-instruct				✅
NousResearch-Hermes-3-Llama-3.1-70B-default				✅
NousResearch-Hermes-2-Pro-Llama-3-8B-default				✅
deepseek-ai-DeepSeek-Coder-V2-Instruct				✅
CohereForAI-c4ai-command-r-plus-default				✅
deepseek-ai-deepseek-coder-33b-instruct				✅
mistralai-Mistral-Large-Instruct-2411				✅
Qwen-Qwen2-7B-Instruct				✅
indischepartij-MiniCPM-3B-OpenHermes-2.5-v2				✅
abacusai-Fewshot-Metamath-OrcaVicuna-Mistral				✅
TheBloke-FusionNet_34Bx2_MoE-AWQ				✅
MiniMaxAI-MiniMax-Text-01		⚠️		✅
microsoft-Phi-3-medium-4k-instruct
google-gemma-7b-it
NexaAIDev-Octopus-v2
google-gemma-2-2b-it
OrionStarAI-Orion-14B-Chat