feat: llama.cpp integration

config.ini.example

docs/pages/docs/changelog/index.md

docs/pages/docs/features/ai/index.md

docs/pages/docs/features/ai/llama-cpp/index.md

docs/pages/tutorials/basic-graphql-schema/index.md

docs/pages/tutorials/connect-to-llama-cpp/index.md

docs/pages/tutorials/hello-world/index.md

src/Command/LlamaCppGenerate.php

src/Command/LlamaCppGenerate/Completion.php

src/Command/LlamaCppGenerate/Embedding.php

src/Command/LlamaCppHealth.php

src/Command/LlamaCppInfill.php

src/JsonSerializer.php

src/LlamaCppClient.php

src/LlamaCppCompletionRequest.php

src/LlamaCppCompletionToken.php

src/LlamaCppConfiguration.php

src/LlamaCppEmbedding.php

src/LlamaCppEmbeddingRequest.php

src/LlamaCppHealthStatus.php