Generated the JSON contracts of providers, the runtime, and services at compile time (#1150)

app/Tests/Serialization/Fixtures/anthropic-messages-request.json

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+{"model":"messages-model","messages":[{"content":"What is the weather?","role":"user"},{"content":[{"type":"text","text":"Compare these pictures."},{"type":"image","source":{"type":"base64","media_type":"image/png","data":"iVBORw0KGgo="}},{"type":"image","source":{"type":"url","url":"https://example.org/picture.png"}}],"role":"user"},{"content":[{"type":"text","text":"Let me search."},{"type":"tool_use","id":"toolu_1","name":"web_search","input":{"query":"weather"}}],"role":"assistant"},{"content":[{"type":"tool_result","tool_use_id":"toolu_1","content":"It is sunny.","is_error":true}],"role":"user"}],"max_tokens":1024,"stream":true,"system":"You answer briefly.","tools":[{"name":"web_search","description":"Search the web.","strict":true,"input_schema":{"type":"object","properties":{"query":{"type":"string","description":"The search query."},"page":{"type":"integer","description":"The page, starting at 1."}},"required":["query"],"additionalProperties":false}}],"temperature":0.5,"top_k":40,"seed":12345678901,"stop":["END",7],"reasoning":{"effort":"low","summary":""},"logprobs":false}