Expand description
LLM provider and model identifiers shared across the workspace.
These types and the Model::infer_from_name helper were originally
introduced inside aa-gateway::budget::types (AAASM-3353). They are
relocated here (AAASM-3362) so that SDKs and other crates can reuse the
provider/model taxonomy and the model-name → (Provider, Model) inference
without taking a dependency on aa-gateway. Pricing tables remain in
aa-gateway — only the enums and the inference logic are core-appropriate.